Ocean Thermal Energy Conversion program. EPFFEP program for OTEC structural systems
A constitutive relation and failure criterion for concrete material under general three-dimensional stress states has been developed using the work-hardening theory of plasticity. The formulation has all the required properties of concrete and gives a close estimate to experimental stresses for complete general stress states. In order that the results of research be readily usable in the analysis of suboceanic structures such as the large shells proposed for adoption in the Ocean Thermal Energy Conversion program (OTEC), corresponding computer code called EPFFEP (Elastic Plastic Fracture Finite Element Program) is developed here to reflect this material response. This report describes the details of this program and its implementation on the computer system CDC 6400. It defines all the input and output of the program along with an example illustrating a typical application of EPFFEP modeling. Detail computer algorithm for the constitutive relations of concrete is also given in the form of flow charts.
- Research Organization:
- Lehigh Univ., Bethlehem, Pa. (USA). Fritz Engineering Lab.
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- OSTI ID:
- 7239676
- Report Number(s):
- COO--2682-8
- Country of Publication:
- United States
- Language:
- English
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