Reliability Analysis of Thermally Stressed Viscoelastic Structures by Monte Carlo Simulation
Probabilistic models for predicting the service life of missile structures subjected to random thermal loads have been developed. The models are applicable to both elastic and viscoelastic materials and utilize the finite element method. Statistical descriptions of the stresses, strains and damage parameters are generated using Monte Carlo computer simulation techniques and mathematical models of the thermal environments in arctic temperate, and desert geographical locations. The statistical descriptions of the induced stresses, strains, and damage are compared with similar descriptions of allowable parameters using interferrence techniques to compute a probability of failure. Realibility concepts are then used to generate service life estimates.
Unable to display preview. Download preview PDF.
- 1.Cost, T. L., “Computer Simulation of Solid Rocket Motor Service Life for Thermal Loads”, Athena Engineering Company, Northport, Alabama, Report No. T-CR-78-9,. March 1978.Google Scholar
- 2.Freudenthal, A. M., Garrelts, J. M., and Shinozuka, M., “The Analysis of Structural Safety”, Journal of the Structural Division of ASCE, v. 92, pp. 267–325, February 1966.Google Scholar
- 3.Cost, T. L., “Influence of Statistical Property Variations on Service Life Predictions”, Proceedings of the 1978 JANNAF Service Life Committee Meeting, Naval Post Graduate School, Monterey, California, April 18–20, 1978.Google Scholar
- 4.Cost, T. L., and Dagen, J. D., “Probabilistic Service Life Prediction of Solid Rocket Motors Subjected to Thermal Loads Using Computer Simulation”, Chemical Propulsion Information Agency, Pub. No. 283, 1977, JANNAF SMBWG Meeting, Vol. II, pp. 77–90, April 1977.Google Scholar
- 5.Heller, R. A., “Thermal Stress as a Narrow Bond Random Load”, ASCE Engineering Mechanics Journal, EM5, No. 12450, pp. 787–805, October 1976.Google Scholar
- 7.Heller, R. A. and Singh, M. P., “Probability of Motor Failures Due to Environmental Effects”, U. S. Army Missiles Research and Development Command, Report No. T-CR-78-11, March 1978.Google Scholar
- 8.Layton, L. H., “Chemical Aging Studies on ANB-3066 and TP-H1011 Propellants”, Final Technical Report, AFRPL- TR-74-16, 1974.Google Scholar
- 9.Herrmann, L. R. and Peterson, F. E., “A Numerical Procedure for Viscoelastic Stress Analysis”, ICRPG Mechanical Behavior Working Group, 7th Meeting, November 1968.Google Scholar