Nonlinear Materials:
​
​​   elastoplasticity
​​     ​
   hyperelasticity

   creep 

​​
Elastoplastic Stress-Strain Curves
Shown are typical polymer departures from elastic behavior that are often sources of failure modes.​
Hyperelastic Material Fit to Yeoh 3-Constant Constitutive Equation
Typical Polymeric Short-Term Creep Behavior Fit to Bailey-Norton Creep Equation
Nonlinear Spatially Distributed Randomness
​This is a form of chaos that can be a critical consideration in nonlinear analysis.