Difference between revisions of "Clamped Neo-Hookean Material"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
== Constitutive Law == | == Constitutive Law == | ||
This [[Material Models|MPM Material]] is an isotropic, elastic-plastic material in large strains using a hyperelastic formulation. The elastic part is a [[Neo-Hookean Material|neo-Hookean material]]. Plasticity occurs when the elongation in either tension of compression reaches a critical value. This material is based on similar material using in a paper to animate snow mechanics<ref>A. Stomakhin, C. Schroeder, L. Chai, J. Teran, and A. Selle, "A material point method for snow simulation," ACM Trans. Graph., Vol. 32, No. 4, Article 102, July 2013.</ref>. | This [[Material Models|MPM Material]] is an isotropic, elastic-plastic material in large strains using a hyperelastic formulation. The elastic part is a [[Neo-Hookean Material|neo-Hookean material]]. Plasticity occurs when the elongation in either tension of compression reaches a critical value. This material is based on similar material using in a paper to animate snow mechanics<ref name="DIZ">A. Stomakhin, C. Schroeder, L. Chai, J. Teran, and A. Selle, "A material point method for snow simulation," ACM Trans. Graph., Vol. 32, No. 4, Article 102, July 2013.</ref>. | ||
== Material Properties == | == Material Properties == | ||
| Line 17: | Line 17: | ||
| xihard || Hardening coefficient || none || 10 | | xihard || Hardening coefficient || none || 10 | ||
|- | |- | ||
| Elastic || Enter 0 to | | Elastic || Enter 0 to basic elastic stresses on the model in Ref. <ref name="DIZ"/>. Enter 1 to base elastic stresses on the [[Neo-Hookean Material|neo-Hookean material]]. || none || 0 | ||
|- | |- | ||
| ([[Neo-Hookean Material#Material Properties|other]]) || Properties to define underlying Neo-Hookean material || varies || varies | | ([[Neo-Hookean Material#Material Properties|other]]) || Properties to define underlying Neo-Hookean material || varies || varies | ||
Revision as of 12:06, 6 February 2015
Constitutive Law
This MPM Material is an isotropic, elastic-plastic material in large strains using a hyperelastic formulation. The elastic part is a neo-Hookean material. Plasticity occurs when the elongation in either tension of compression reaches a critical value. This material is based on similar material using in a paper to animate snow mechanics[1].
Material Properties
The material properties are given in the following table.
| Property | Description | Units | Default |
|---|---|---|---|
| CritComp | Critical compression extension | none | 0.025 |
| CritComp | Critical tensile extension | none | 0.0075 |
| xihard | Hardening coefficient | none | 10 |
| Elastic | Enter 0 to basic elastic stresses on the model in Ref. [1]. Enter 1 to base elastic stresses on the neo-Hookean material. | none | 0 |
| (other) | Properties to define underlying Neo-Hookean material | varies | varies |
Examples
These commands model snow: