Accession Number : ADA258192


Title :   Structural Simulation Coupling for Transient Analysis


Descriptive Note : Master's thesis


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF AERONAUTICS AND ASTRONAUTICS


Personal Author(s) : Clark, Howard T


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a258192.pdf


Report Date : Jun 1992


Pagination or Media Count : 164


Abstract : Analysis of the transient time response of many modern engineering systems requires simulation by means of direct time integration of sets of coupled-field equations. In the past the simulation of such coupled problems has created difficulties which are not seen in analogous single-field problems. Perhaps the most important of these difficulties is the fact that existing engineering analysis packages have been oriented to solving only single-field problems. This suggests one particularly attractive option: the use of existing, single-field analysis software while imposing certain modular requirements. If modularity can be maintained, direct integration of the equations can proceed by sequential or parallel operation of the separate analyzers. This research develops the theory by which the numerical simulations of two or more separate fields may be combined to solve the coupled-field problem. This theory allows simulations to be used with little or no change by considering the constraints that provide for field coupling. The development takes into account the various numerical methods which may be used by individual simulations to solve their separate problems. Above all this paper does not seek to suggest that simulation coupling is the best or foremost simulation methodology available, merely that it is a viable and cost saving alternative to solving the larger, more involved coupled-field problem. The specific discipline of focus will be multibody dynamics. The goal will be to show that it is possible to couple multiple single body dynamic analysis packages and come up with solutions comparable to the full multibody dynamic case.


Descriptors :   *MATHEMATICAL MODELS , *TRANSIENTS , *INTEGRATION , *NUMERICAL METHODS AND PROCEDURES , ALGORITHMS , METHODOLOGY , MODELS , MOTION , PARALLEL PROCESSING , TIME , ENGINEERING , COUPLINGS , SAVINGS , COMPUTER AIDED DIAGNOSIS , ANALYZERS , EQUATIONS , COMPUTER NETWORKS , OPERATION , RESPONSE , COSTS , PROBLEM SOLVING , THESES , DYNAMICS , STABILITY , COMPUTERIZED SIMULATION , REQUIREMENTS


Subject Categories : Operations Research
      Computer Programming and Software


Distribution Statement : APPROVED FOR PUBLIC RELEASE