| Title |
The Analysis of Ultimate Load and Deformations of Light Gage Compression Member |
| Abstract |
The finite element analysis considering geometrical nonlinearity and material nonlinearity has been used to investigate the ultimate load and deformations of light gage member. The element stiffness is derived by superimposing its membrance and bending stiffness matrices. In the membrane stiffness, the in-plane rotation is included, so a element has 24 d.o.f. An approximate non-linear analysis is archieved by a discrete layered approach and the constant-arc-length method.C-shaped lipped channel sections, with and without a web opening, subjected to concentric axial load is used to show the capability of computer program. Here local and over-all initial displacements is combined to obtain the interaction of web, flange and over-all buckling. The results indicate that the web buckling is most important and the interaction determines the deformed configurations.The applicability of the present method for detailed investigation of light gage member is demonstrated. |