OptiStruct is a proven, modern structural solver with comprehensive, accurate and scalable solutions for linear and nonlinear
analyses across statics and dynamics, vibrations, acoustics, fatigue, heat transfer, and multiphysics disciplines.
The OptiStruct Example Guide is a collection of solved examples for various solution sequences and optimization types and provides
you with examples of the real-world applications and capabilities of OptiStruct.
This section presents nonlinear small displacement analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents nonlinear large displacement analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents nonlinear transient analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents normal modes analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents complex eigenvalue analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents thermal and heat transfer analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents analysis technique examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents shape optimization example problems, solved using OptiStruct. Each example uses a problem description, execution procedures and results to demonstrate how OptiStruct is used in shape optimization.
The examples in this section demonstrate how topography optimization generates both bead reinforcements in stamped
plate structures and rib reinforcements for solid structures.
The examples in this section demonstrate how the Equivalent Static Load Method (ESLM) can be used for the optimization
of flexible bodies in multibody systems.
This section presents multiphysic examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents response spectrum examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
This section presents nonlinear explicit analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
The OptiStruct Example Guide is a collection of solved examples for various solution sequences and optimization types and provides
you with examples of the real-world applications and capabilities of OptiStruct.
This section presents nonlinear explicit analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
In this example, 3-point bending analysis of a phone is performed to check the
flexural strength of the phone.
The objective is to analyze the stresses and displacement of the phone when it is
pressed by pressing cylinder from top and constrained by the fixed cylinder at the
bottom.
The phone containing all the parts inside is subjected to bending using pressing
cylinder. The phone parts are given appropriate contacts and material. The 3-point
bending analysis of the phone is performed using RBODY. The lower
cylinders are fixed, the phone is resting on it and the pressing cylinder is given
displacement of 8 mm.
PCB Material Properties
Young's modulus
15000
Poisson's ratio
0.3
Density
3e-9
Battery Material Properties
Young's modulus
2000
Poisson's ratio
0.3
Density
2.5e-09
PCB Comps
Young's modulus
2000
Poisson's ratio
0.3
Density
2.e-09
Bolt and carrier plate
Steel nonlinear material
Frame, button and front back cover (polymer plastic)
Young's modulus
2000
Poisson's ratio
0.4
Density
1.1e-9
Table 1. Stress Strain Plot Values
Strain
Stress
0
50
0.01
55
0.1
60
0.3
65
Glass
Young's modulus
70000
Poisson's ratio
0.3
Density
2.5e-9
Carrier plastic (glass fiber plastic)
Young's modulus
10000
Poisson's ratio
0.4
Density
1.4e-9
Table 2. Stress Strain Plot Values
Strain
Stress
0
100
0.01
120
0.054
140
Gasket
Gasket material, MATHE, Model
OGDEN
Buttons rubber
Rubber material, MATHE, Model
OGEDEN
Results
Displacement plot of phone bending:
Stress plot:
With a stress of 587 on the glass of the phone indicates that glass will break
at the location (Figure 3).