Abstract
A numerical-experimental experimental technique for the characterization of the mechanical behaviour of materials described by a mixture model is presented. This technique is based upon an identification model which includes the discretized system equations (i.e. the balance of mass and momentum), parameter equations, and output equations relating measurements to system variables and parameters. On these equations residuals are allowed. The objective of the identification is to find values of the material parameters and a solution of the system variables for which the system model best describes the measurement data, while the residuals are minimized. This approach has the advantage that residuals on each of the model equations can be weighted separately, which may help to trace model errors. The technique is tested on a simulation of the confined compression experiment. The displacement of a selected material point and the pressure in a selected material point as a function of time are used as simulated measurements. Two parameters are identified on the basis of these simulated measurements. A multiple shooting algorithm is chosen to solve the resulting boundary value problem for this specific situation.
| Original language | English |
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| Title of host publication | Proceedings of Advances in bioengineering 1993 : presented at the 1993 ASME winter annual meeting, New Orleans, Louisiana, November 28 - December 3, 1993 |
| Editors | J.M. Tarbell |
| Place of Publication | New York |
| Publisher | American Society of Mechanical Engineers |
| Pages | 11-14 |
| ISBN (Print) | 0-7918-1031-3 |
| Publication status | Published - 1993 |