Dynamic Composite Laminate Finite Element Analysis.
Abstract
The analysis of plate like structures such as blades built-up with composite laminate fibers requires the modification of an existing finite element computer program to include the coupling of in-plane stretching with out-of-plane bending of a plate. An industry standard computer program SAP IV was selected as host program to accept new composite plate finite element. The SAP IV Finite Element Computer Program was designed to accept new elements into its element library easily. The new element, in general, must be self contained since the general philosophy and program structure is 'overlayed' into the computer. The laminate composite plate element is the new element to be integrated into the element library. The new element named TYPE 9 is similar to element TYPE 6 in element description and input. The main difference is that element TYPE 9 has the ability to couple in-plane extension with out-of-plane bending which is possible with laminate plate behavior and theory. Element TYPE 9 is a quadrilateral element and is formulated from quadrilateral shape functions rather than by four triangles as in TYPE 6. Also, in general, TYPE 9 allows for material directions to be arbitrary for ease of material input descriptions. The element is modelled after the structure of element TYPE 6; therefore, element TYPE 9 can degenerate to element TYPE 6. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1981
- Accession Number
- ADA100643
Entities
People
- John A. Mcelman
- John O'callahan