Shell Bending Stiffness#

Shell bending stiffness = {model_name} {float_list} [M/Lt2]

Description / Usage#

This required card is used to specify the model for the Shell bending stiffness property D which is defined as D=Et3/12(1-ν2), where E is the elastic modulus, ν Poisson’s ratio, and t the shell thickness. The units are M-L2/t2 (or F-L). The elastic modulus is set through the Lame MU and Lame Lambda cards. This property is needed for the inextensible cylindrical shell equations (see EQ = Shell Tension).

Definitions of the input parameters are as follows:

{model_name}

Name of the Shell bending stiffness coefficient model. This parameter can have one of the following values: CONSTANT.

  • {float1} - The value of the shell bending stiffness.

The details of each model option are given below:

CONSTANT <float1>

For the CONSTANT model, {float_list} is a single value:

  • <float1> - Standard value of the coefficient D.

References#

GT-027.1: GOMA’s Shell Structure Capability: User Tutorial (GT-027.0). P. R. Schunk and E. D. Wilkes.

GT-033.0: Structural shell application example: tensioned-web slot coater (GT-033.0). P. R. Schunk and E. D. Wilkes.