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UC-win Series Dynamic Analysis
Engineer's Studio Three Dimensional Plate
Dynamic Nonlinear Analysis

Initial release : February 27, 2009
Latest ver. : September 26, 2017


(Tax is not included.)
Engineer's Studio® Ver.7 Ultimate US$19,200
  Engineer's Studio® Ver.7 Ultimate (not including the Maekawa model) US$12,300
  Engineer's Studio® Ver.7 Ultimate (not including the cable element) US$14,400
  Engineer's Studio® Ver.7 Advanced US$8,400
  Engineer's Studio® Ver.7 Lite US$5,700
  Engineer's Studio® Ver.7 Base US$3,690
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    Program Overview
Engineer's Studio, 3D FEM analysis program is in house development from pre-processing and calculation engine to post-processing.
This program analysis non-linear behavior of structure by modeling with beam elements considering a part of civil engineering and building structure as one bar or continuous plate elements.

Related Information
Related Product


Press release


 New Product Introduction


Series


Seminar Document  (Updated on September 09, 2009)

Sample movie (in Japanese)

      Ver.7.0.0 Updated contents (Released on September 26, 2017)NEW
  1. New option "Civil Structure Biaxial Section Calculation (Partial Factors Method / Specifications for Highway Bridges, 2017) option"
  2. Backup function for input data file up to 10 generations ago
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    Program Features
Analysis Features

Main feature in analysis is that implement the 3D filer elements, which have ever received a good reputation and many actual results in UC-win/FRAME(3D) and the plate elements based on the Reissner-Mindlin theory and also static / dynamic analysis are available, considering material nonlinearity and geometric nonlinearity(Large Displacement) simultaneously.

Image of Fiber elements (the mathematical model on the right)

Plate elements can have laminated structures, consists of layers which direct to the thickness way
and define each setting for different type of materials between each layers or linear/non/linearity.
Reinforcement concrete non linear constitutive equation is adopted as concrete constitutive equation applied to the plate elements, which was developed by the concrete laboratory in Tokyo University.
It can be said that this product's plate element has expanded RC element in UC-win / WCOMD to thickness way to multi-layer and has made it possible to analyze non-linear behavior not only of in-plane deformation but also of out-of-plane.
The isoparametric elements that are often used in the FEM have been adopted as flat plate elements.

 Image of laminated plate elements (the mathematical model on the right)

Addition of a triangle primary element enables a mixture of 3 and 4 node elements during the automatic mesh of complex shaped field (refer to the Triangular Liner in the figure below). High mesh elements (quadrilateral 8 node element and triangular 6 node element) can be converted into low-elements (quadrilateral 4 node element and triangular 3 node element) after being selected.
  • Triangular 3 nodes element and a primary form function
  • Triangular 6 node element and a secondary form function
  • Quadrilateral 4 node element and a primary form function
  • Quadrilateral 8 node element and a secondary form function

Kind of flat plate elements Three types of creation commands for plate elements

Auto-mesh divide with the mixture of square and
triangular primary element
The button to convert high-elements into low-elements


Main analysis functions


Category
Contents
Analysis static analysis / dynamic analysis / eigenvalue analysis
Nonlinear Analysis material nonlinearity / geometric nonlinearity(large displacement) / composite nonlinearity considering both material nonlinearity and geometric nonlinearity at the same time
Applied Theories infinitesimal displacement / large displacement / elastic foundation beam theory / Euler-Bernoulli beam theory / Timoshenko beam theory(considering shear deformation) / Reissner-Mindlin theory
Elements elastic beam element / spring element / M-φ element / fiber element / plate element(laminated plate)
Boundary Conditions locking condition: six degree of freedom for the nodal point(free or fixed or spring) / distributed spring for elastoplastic beam element(two way of axial member direction and axial member )
Material Types concrete / reinforcement bar / prestressing steel / steel plate / carbon fiber sheet / aramid fiber / elastic material(by input any young module) / non structural material(considering only weight per unit volume)
Definable Load nodal load / material load(concentrated / distributed / projection) / thermal load / forced load
Auto Created Load dead load / prestressed load / horizontal seismic coefficient load
Static Load monotone increasing / cyclic (constant, increasing) / reversible cyclic (constant, increasing)
Dynamic Load acceleration wave( individual or simultaneous input of two components, vertical adn horizontal)
Dynamic Analysis direct integration method by the Newmark-β method(β=1/4)
Damping stiffness proportional pattern by element (initial stiffness, instantaneous stiffness), Rayleigh damping (initial stiffness, instantaneous stiffness) / Rayleigh damping by element(initial stiffness, instantaneous stiffness)
Mass Matrix consistent mass matrix / lumped mass matrix


Input waveform is displayed on the result of the dynamic analysis

The seismic waveform you entered can be displayed in the new screen when you check the time history results of the dynamic analysis. Click in the graph to move to the next step, and the deformation figure and the section force are synchronized with the step.

Entered waveform displayed on the history result



Non linear features

Following verifications to RC section compliant with specifications for highway bridges are available; allowable moment stress vrf, moment strength vrf, average shear stress vrf, shear strength vrf, minimum amount of reinforcing bar vrf.

M-φ feature
  • Framework: bilinear (symmetric, asymmetric) / tri-linear (symmetric, asymmetric) / tetra linear (symmetric, asymmetric)
  • Internal history: Normal / Takeda / elastic / origin-oriented / origin maximum point-oriented / H11 railway seismic

Spring feature
  • Framework: bilinear (symmetric, asymmetric) / tri-linear (symmetric, asymmetric) / tetra linear (symmetric, asymmetric) / Nagoya high-speed rubber bearing type / BMR damper
  • Internal history: Normal / Takeda / elastic / origin-oriented / origin maximum point-oriented / H11 railway seismic / Positive and negative direction / positive direction / negative direction / shock absorber / Clough/slip type / Gap/Hook type

Hysteresis (stress-strain curve for the fiber element)

Material Constitutive law
Concrete Quadratic curve Models that have been adopted as for the ultimate bending moment calculation in many compliance standards.
Hoshikuma Frameworks are n-dimensional curve and strain softening straight that takes into account the lateral restrain effect (specifications for highway bridges). Internal histories are "F3D original" and "Sakai - Kawashima model".
COM3 Constitutive law developed at the concrete laboratory in Tokyo University. In reference to JSCE Standard Specifications for Concrete Structures-2002 (Aseismatic Performance Verification)
JSCE The model which simplifies "COM3" type for rod member. 
Mander Frameworks are fractional functions that takes into account the lateral restrain effect. Internal histories are "Sakai - Kawashima model".
Reinforcing Bar / Steel Plate / PC steel frameworks:
Bilinear (symmetric, asymmetric)
 Trilinear (symmetric, asymmetric)
Internal histories : kinematic hardening law (straight) / modified
Menegotto-Pinto (Sakai - Kawashima) / modified
Menegotto-Pinto (F8)
Carbon Fiber /
Aramid Fiber
frameworks: linear (tensile side only) No internal histories

Fiber elements
  • Fiber elements(original): Non-linear elements using rigid body link and distributed spring elements. Effects of shear deformation will be ignored. Deformation and rigidity of the member at both ends are independent, and it is suitable to analyze the members that produce negative rigidity.
    In addition, because of the rigidity matrix based on the constant curvature assumptions up to half of the length of the element, it is also easy to adjust with plastic hinge etc. assumptions that assume curvature constant section such as road bridge.
  • Fiber elements(primary): Two nodes isoparametric elements using a primary curve for shape function. Based on Timoshenko beam theory, it considers shear deformation effects. Elements curvature distribution in the length direction is constant. Based on the rigidity evaluation on one of the Gauss integration point in the middle of member, it uses Gauss integration and builds rigidity matrix of element .
  • Fiber elements(secondary): Three nodes isoparametric elements using quadratic curve for shape function.


Design Support

   -fiber elements, M-φ element, damage display of spring element
   -display of damage on M-φ element
   -display of damage on spring element
   -stress calculation (mainly specifications for highway bridges)
   -strength calculation (mainly specifications for highway bridges)
   -curvature verification / spring element verification
   -function of road bridge residual displacement verification
   -ductility factor verification for highway bridges(μ=δmax / δ, μa=δls2 / (α*δy))
   -displacement verification of highway bridges

Displacement figure contour  Slab bending moment contour

   -Import or export of CAD data(DXF / DWG format) are supported.
   -IFC export is supported.


Civil Structure Biaxial Section Calculation (Partial Factors Method / Specification for Highway Bridges, 2017) Option

Verification by the partial coefficient method adopted in the Specifications for highway bridges, 2017.
Mainly bending stress test, bending strength test, shear strength test, and curvature test.
*To conduct the curvature test, "M-φ element" option is required in addition to this option.

Displacement verification (for single column type RC pier and single column type steel pier) and residual displacement verification (single column type RC pier and single column type steel pier) are available only if directly enter the yield displacement and limit displacement.
*"M-φ element" option is required in order to conduct the residual displacement test and the displacement test by calculating yield displacement and limit displacement automatically.

Press Release
FORUM8 has released Engineer's Studio® Ver.7. Civil Structure Biaxial Section Design (Partial Factors Method / Specifications for Highway Bridges, 2017) Option is added. (updated on 28 September 2017)


Specifications for highway bridges-2012 compliant

main support items:
"recording of seismic waveform in new specification for Roads and bridges",
"M-φ of reinforced concrete section and steel pier section",
"rasidual displacement verification"


Calculation of live load

Live-load calculation is an analysis performed on the influence line of single bar. After creating the influence line, the program searches the location on each target point in which the section force etc. is the greatest or the least by moving the live-load (L load, T load and joint running interval). The analysis is usually for bridge axis.


Strain check for steel members
Strain check based on the "Standard Specifications for Steel and Composite Structures" (February 2008, Japan Society of Civil Engineers) can be done. By modeling steel members using fiber elements and then assigning safety factors and ultimate strain, the result of strain check can be obtained.


Engineer's Studio® data association chart




Feature Comparison of Engineer's Studio® and UC-win / FRAME (3D)

    ◎=Enhancements, =Supported, ×=Not supported
Items Functions ES F3D
Analysis static analysis / dynamic analysis / eigenvalue analysis / influence line analysis (1-bar)
Non-linear Analysis material non-linear / geometric non-linear (large displacement theory) / complex non-linear
Computational Engine 64bit 32bit
Applied Theory small displacement / large displacement / elastic foundation beam theory / Euler-Bernoulli beam theory / Timoshenko beam theory (considering shear deformation) 
Reissner-Mindlin method (Adaptation theory of plate elements) ×
Elements elastic beam element / rigid body element / spring element / M-φ element / fiber element
flat plate element (elastic) / flat plate element (RC non-linear /  stacked) / cable element / damping element (speed power type cohesive damper) ×
Boundary Conditions node: six degrees of freedom (free or fixed or spring) / elastic beam elements: distribution spring / coupling spring (defined in the node)
Material Types concrete / reinforcing bar / prestressing steel / steel plate / carbon fiber sheet / aramid fiber sheet / elastic material / non-structural material
Load nodal load / member load (beam elements) / thermal load (beam elements) / forced displacement / initial section force
internal force load / plate volume force / plate surface load / flat plate ground displacement / flat plate hydrodynamic /
cable elements: distributed load (load to be distributed along the entire length of cable) / thermal load
×
Auto Created Load dead load / prestressed load / horizontal seismic coefficient load
Static Load monotonic increasing / cyclic (constant, increasing) / reversible cyclic (constant, increasing)
Dynamic Load acceleration wave 
Dynamic Analysis direct integration method by Newmark-β method(β=1/4)
Damping stiffness proportional pattern by element / Rayleigh damping / Rayleigh damping by element 
Mass Matrix consistent mass matrix / lumped mass matrix
Non-Linear Feature M-φ feature...Bilinear / trilinear / tetra linear
spring feature...Bilinear / trilinear / tetra linear / Nagoya high-speed rubber bearing type / BMR damper
hysteresis (for fiber element)...
  concrete: Quadratic curve / Hoshikuma / COM3 / JSCE / Mander
  steel member: bilinear / trilinear / carbon fiber sheet: linear (tensile  only)
fiber element type...fiber elements (original, primary, secondary)
Design Support damage display of fiber element / damage display of M-φ element / damage display of spring element
stress verification of beam element / strength verification of beam element / curvature verification of beam element / spring element verification
function of road bridge residual displacement verification (specification for Roads and bridges) / limit state design (Japan Society of Civil Engineers and railway standard)
contour figure of the plate element ×
Model Generation table format input / multiple models display ×
do-redo function / large-scale model support / range expansion of models
copy and paste of models
Import fsd file (FRAME manager) / f3d file (UC-win/FRAME(3D))
sdf file (Steel Detailing Neutral File)
$o1 file (old FRAME manager) / e2d file (inside Engineer's Studio) ×
Export  rc2 file (UC-win/Section)
DXF/DWG file (CAD data), IFC file ×


Screen examples

<Case1>
Following image show the scene where the "View setting" tab for Display/non-display is switched on the right side tree and the button to display Perspective / Plane / Side / Front view are put and their views are arranged at random on the right side screen.
Click to enlarge

<Case2>
This shows that multiple input windows of table format is arranged in one window. Any windows can be put at the same time and rearranging is also available like tab switching. Add / Delete of nodes in the model by a mouse operating reflects table automatically.

Click to enlarge

<Case3>
The left image shows that triangle plate elements have been made by mouse operating. Mesh division of triangle will be carried out automatically by clicking three points in space in order and put on the "Apply" button. The right image shows that square elements are created automatically by dragging two points in space. Anyway, small window is used for the size setting of mesh division or selecting element types.
Click to enlarge Click to enlarge

<Case4>
The image shows that a window is called to search a elastic beam element. Cross lines and a cross point are drawn on the searched element. There are the option, which can bring the element to be "selected".
Click to enlarge

<Case5>
The deformation of plate elements and the judgement result by damage, are displayed at the same time. The right image is determined for each layer, the left image is determined as a whole element.
Click to enlarge Click to enlarge

<Case 6>
Verification by horizontal capacity method and push over analysis

Analysis model of the push over Deformation figure of the push over analysis Load displacement relationship of the push over analysis

<Case7>

Setting window of report output, which do the output setting as it looks when outputted.
Click to enlarge the image.



Engineer's Studio(R) related books
STRUCTURAL ANALYSIS -Case Studies and Numerical Simulation
Written by Hiromichi Yoshikawa, Hiroki Aoto, Yoshitaka Kai
Release : November 18, 2009
Published by :建通新聞社
220 pages / all color pages
Price : 2800yen (+tax)

Containing explanation of wide variety of case studies from structural analysis basics to parametric simulation of real structures. Including advanced analysis cases using fiber elements.
ContentsChapter 1: Introduction to structural analysis
Chapter 2: Non linear analysis of section
Chapter 3: Non linear analysis of members
Chapter 4: Earthquake response analysis of structures
Chapter 5: Frame analysis basics
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    Award

FORUM8 won the Risk Management Design Award   Engineer's Studio®

Plate cable element compliant Three Dimensional Plate Dynamic Nonlinear Analysis soft "Engineer's Studio®" won the Risk Management Design Award (RiMDA). This award was established by Public Network Institution as the overall design recommended system of the crisis management industry.

Group photo (center: Kawasaki chairman) Award ceremony



The 23rd Awards of excellent new technology and products for small and medium enterprise
FORUM8 won the excellent award!
Engineer's Studio®

On May 11, 2011, structural analysis software Engineer's Studio(R) won the excellent award for "The 23rd Awards of excellent new technology and products for small and medium enterprise". This is the advanced structural analysis software for concrete for which FORUM8 and Prof. Koichi Maekawa of Tokyo University have been working together for 25 years. Therefore Prof. Koichi Maekawa also won the award "Special collaboration prize among government, industry and academia".
Award : Excellent award for software section, Special collaboration prize among government, industry and academia
Applicant : FORUM8 Co., Ltd.
Professor Koichi Maekawa, Department of Civil Engineering,
Graduate School of the University of Tokyo
Product name : Structural analysis program "Engineer's Studio(R)"



FORUM8 won the destruction analysis contest! (2010) Engineer's Studio(R)

On July 8, 2010, a combined team formed by Forum8 employee (Yoshitaka Kai, Yoichi Matsuyama, Blent Fleming, Keiichiro Abe), president of A-Works, Hirooki Aoto, and Tokyo City University professor, Hiromichi Yoshikawa, were commended as champion of "Destruction analysis and blind analysis contest for seismic resistance experiment on full size bridge made of nature mortar" at the ceremony presenting the results of the 2010 seismic resistance experiment /research on bridge pier, hosted by National Institute for Earth Science and Disaster Prevention in Japan (Independent company).
Dynamic nonlinear analysis "Engineer's Studio(R)"developed by FORUM8 is used for analysis software.


Presentation slide Result for destruction analysis and blind analysis contest for seismic resistance experiment on full size bridge made of nature mortar (PDF, 837KB)


Winner of the pre-analysis contest in the fiber model category! UC-win/FRAME(3D)

On the theme of seismic experiment/research on bridge piers using a full size three dimensional shaking destruction experiment facility (called E-Defense) referred to as "To what extent bridge piers can resist earthquakes?", UC-win/FRAME(3D) analysis support team won the pre-analysis contest in the fiber model category at the ceremony presenting the results for the C1-2 Experiment Pre-analysis Contest for "The 2007/2008 Seismic Resistance Experiment/Research on bridge piers", sponsored by the National Research Institute for Earth Science and Disaster Prevention in Japan, held on the third floor of World Trade Center building on 5 March 2009.
UC-win/FRAME(3D) analysis support team
Development manager, corecipient, Hiroki Aoto
(Second from the right : Hiromichi Yoshikawa of Tokyo City University)

AVI for analysis result
- Time history displacement
- 1st proper period
- 2nd proper period

Presentation Slide
C1-2 Experment Contest Analysis result for fiber model section (Japanese) (PDF, 1,932KB)

Experiment (National research Institute for Earth science and Disaster prevent Hyogo EarthqualeEngineering Research Center Website)

Conference Presentation
9th U.S. National and 10th Canadian Conference on Earthquake Engineering (PDF, 1,583KB)
(Tront, Canada in July, 2010)


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