Theory of Dynamic Strength
A whole series of problems related to stress wave-material interaction can be solved by using Fourier methods in connection with the recently discovered least action law for brittle fracture. A quantitative physical meaning will be given to the concepts of rest pulse, fracture potential, and penetration depth. A long and a short pulse of equal energy will be compared to show that the above quantities depend on the pulse length and the flaw distribution of the material. The concepts have a broad range of applicability and can be applied to problems in the areas of seismology, rock shattering, and impulsive processes of a military nature which up to now were impervious to quantitative analysis.
KeywordsShort Pulse Stress Wave Action Density Short Crack Equal Energy
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- 1.B. Steverding, S. H. Lehnigk, Bull. Am. Ceram. Soc. 48, 1057 (1970). (Notes: 1. remarks concerning cross sections are valid only for periodic pulses of the type or ; 2. the statement that short pulses interact only with short cracks is in error.)Google Scholar