Nonlinear Structural Materials Module
|Blatz-Ko||Kinematic Plastic Hardening||Deviatoric|
|Damping||Isotropic Plastic Hardening||Garofalo (Hyperbolic Sine)|
|Gao||Large Strain Plasticity||Nabarro-Herring|
|Gent||Orthotropic Hill Plasticity||Norton|
|Large Strain Plasticity||Perfectly Plastic Hardening||Norton-Bailey|
|Mooney-Rivlin (two, five and nine parameters)||Thermal Expansion||Potential|
|Murnaghan||Tresca Yield Criterion||User-defined Creep|
|Ogden||von Mises Yield Criterion||Weertman|
|User-defined Hyperelastic Material|
Viscoplastic Creep in Solder Joints
This example studies viscoplastic creep in solder joints under thermal loading using the Anand viscoplasticity model, which is suitable for large, isotropic, viscoplastic deformations in combination with small elastic deformations. The model geometry includes two electronic components (chips) mounted on a circuit board by means of several ...
Sheet Metal Forming
This example is a NAFEMS validation model of a friction contact problem with an elastoplastic material model. A thin metal sheet is being forced into a die by a punch. Both the compressing displacement and the release of the punch are modeled in order to compute the forming angle (at the maximum punch displacement) and the angle after the ...
This model simulates the insertion of a snap hook in its groove. Fasteners like this are common in the automotive industry, for example, in the control panel of a car. In this case it is important to know the force that must be applied in order to place the hook in the slot but also the force needed to remove it. From a numerical point of view, ...
In this model you study the force-deflection relation of a car door seal made from a soft rubber material. The model uses a hyperelastic material model together with formulations that can account for the large deformations and contact conditions.
Necking of an Elastoplastic Metal Bar
A circular metal bar of elasto-plastic material with nonlinear isotropic hardening behavior is subjected to uniaxial tension. Affected by significant stresses the bar experiences high plasticity. The phenomenon of necking is captured and its growth is accurately simulated. The change in radius is in good agreement with results found other ...
Temperature-Dependent Plasticity in Pressure Vessel
This example demonstrates how to use temperature dependent materials within the Nonlinear Structural Materials Module. A large container holds pressurized hot water. Several pipes are attached to the pressure vessel. Those pipes can rapidly transfer cold water in case of an emergency cooling. The pressure vessel is made of carbon steel with an ...
Inflation of a Spherical Rubber Balloon
This model aims to investigate the inflation of a rubber balloon with different hyperelastic material models, and compare the results to analytical expressions. A controlled inflation could benefit clinical applications, cardiovascular research, and the medical device industry, thus the importance of understanding the hyperelastic behavior ...
Plastic Deformation During the Expansion of a Biomedical Stent
A stent is a wire-mesh tube used to open a coronary artery during angioplasty, a process for the removal or compression of plaque. Their design is of significance for percutaneous transluminal angioplasty with stenting. During this procedure, a stent is deployed into the blood vessel by means of a balloon. The expanded stent acts as a scaffold ...
Elastoacoustic Effect in Rail Steels
The elastoacoustic effect is a change in the speed of elastic waves that propagate in a structure undergoing static elastic deformations. The effect is used in many ultrasonic techniques for nondestructive testing of prestressed states within structures. This example model studies the elastoacoustic effect in steels typically used in railroad ...