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- 1970-1-1
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发表于 2011-1-4 08:06:01
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来自 江苏南京
Stress, strain, and other tensor components
Stress and other tensors (including strain tensors) are available for elements with displacement degrees of freedom. All tensors have the same components. For example, the stress components are as follows:
S11
| Local file:///H:/docs/v6.8/books/usb/graphics/usb_eqn03786.gif direct stress.
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S22
| Local file:///H:/docs/v6.8/books/usb/graphics/usb_eqn03787.gif direct stress.
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S12
| Local file:///H:/docs/v6.8/books/usb/graphics/usb_eqn03788.gif shear stress.
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Section forces, moments, and transverse shear forces
Available for elements with displacement degrees of freedom.
SF1
| Direct membrane force per unit width in local 1-direction.
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SF2
| Direct membrane force per unit width in local 2-direction.
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SF3
| Shear membrane force per unit width in local 1–2 plane.
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SF4
| Transverse shear force per unit width in local 1-direction (available only for S3/S3R, S3RS, S4, S4R, S4RS, S4RSW, S8R, and S8RT).
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SF5
| Transverse shear force per unit width in local 2-direction (available only for S3/S3R, S3RS, S4, S4R, S4RS, S4RSW, S8R, and S8RT).
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SM1
| Bending moment force per unit width about local 2-axis.
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SM2
| Bending moment force per unit width about local 1-axis.
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SM3
| Twisting moment force per unit width in local 1–2 plane.
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The section force and moment resultants per unit length in the normal basis directions in a given shell section of thickness h can be defined on this basis as file:///H:/docs/v6.8/books/usb/graphics/usb_eqn04005.gif
where file:///H:/docs/v6.8/books/usb/graphics/usb_eqn00639.gif is the offset of the reference surface from the midsurface.
The section force SF6, which is the integral of file:///H:/docs/v6.8/books/usb/graphics/usb_eqn00055.gif through the shell thickness, is reported only for finite-strain shell elements and is zero because of the plane stress constitutive assumption. The total number of attributes written to the results file for finite-strain shell elements is 9; SF6 is the sixth attribute.
这个是帮助里面的,(24.6.7 Three-dimensional conventional shell element library)
估计还要进行一些后处理, |
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