| 1. | Perzyna P., Drabik A., Wave propagation in inelastic material - material derivative versus Lie derivative formulation, ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK, ISSN: 0044-2267, Vol.72, No.4, pp.226-229, 1992 | |
| 2. | Perzyna P., Drabik A., Analysis of the fundamental equations describing thermoplastic flow process in solid body, ARCHIVES OF MECHANICS, ISSN: 0373-2029, Vol.43, pp.287-296, 1991 | |
| 3. | Perzyna P., Drabik A., Description of micro-damage process by porosity parameter for nonlinear viscoplasticity, ARCHIVES OF MECHANICS, ISSN: 0373-2029, Vol.41, No.6, pp.895-908, 1989 Abstract:The main purpose of this paper is to investigate the contribution implied by additional terms arising in the nonlinear viscoplastic response for the growth mechanism of microvoids in ductile solids. The dissipative mechanisms suggested by dynamics of dislocations are discussed. Experimental data are reviewed and compared. The evolution equation for the porosity parameter for the general nonlinear overstress viscoplastic theory is derived. Three different particular overstress functions are investigated, namely - logarithmic, power and linear. The approximation procedure for the three types of the evolution equation obtained shows that a description of the dynamic fracture phenomenon for dissipative solids can be the same in the case of logarithmic and linear functions. Affiliations:| Perzyna P. | - | IPPT PAN | | Drabik A. | - | IPPT PAN |
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| 4. | Perzyna P., Drabik A., Description of micro-damage process by porosity parameter for nonlinear viscoplasticity, ARCHIVES OF MECHANICS, ISSN: 0373-2029, Vol.41, pp.895-908, 1989 | |
| 5. | Perzyna P., Drabik A., Analysis of the evolution equation describing the postcritical behaviour of dissipative solids, ARCHIVES OF MECHANICS, ISSN: 0373-2029, Vol.36, pp.733-748, 1984 | |
