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(set-physical)

Description

Set some material properties to a finite element object . This function can be used to avoid to redefine a finite element object. The function compute-mode must be apply in order to take into consideration the new material properties.

Syntax and default

(set-physical modalys-object (key value)) (set-physical my-object (density 7800) (young 2e11) (poisson 0.3))

Parameters

modalys-object The modalys object to be updated. key Value density Density of the material in kg/m^3^. Some typical values are

+-----------------------+-------------+-----------------+-------------+
| > Oak                 | 720         | Brass           | > 8500      |
+:======================+=============+=================+:============+
| > Glass               | 2300        | > Nickel        | > 8800      |
+-----------------------+-------------+-----------------+-------------+
| > Quartz              | 2650        | Copper          | > 8900      |
+-----------------------+-------------+-----------------+-------------+
| > Aluminium           | 2700        | > Silver        | > 10500     |
+-----------------------+-------------+-----------------+-------------+
| > Steel               | 7700        |                 |             |
+-----------------------+-------------+-----------------+-------------+
young Young'smodulus, in N/m^2^. This parameter is related to the elasticity of the material. A rigid material gets higher values. Some typical values are Glass 6.2e10 Brass 1.04e11 Quartz 7.9e10 Nickel 2.1e11 Aluminium 7e10 Copper 1.2e11 Steel 2e11 Silver 7.8e10 poisson Poisson ratio of the material, from 0 to 1. With a value of 1 the material keep a constant volume when a deformation occurs (imagine a ballon plenty of wa- ter). Lowered values authorize a loss in the total volume when a compression is done on the material.

See also

make-object 'finite-element