This paper presents tables and charts of loading ratio of the shock response of several nonlinear systems, and the composite C sub 1 - C sub 2 - C sub 3 charts. These data constitute a concise presentation of the response characteristics of a nonlinear system to shock loading, and are useful in many applications. The present report is con cerned with two types of springs 1 elastic, softening, cubic spring, 2 bilinear springs, which includes a spring with perfectly plastic yielding characteristics as a special case. The bulk of the material is related to a halfsine pulse. However, the results for quarter-cosine pulse, one with zero rise-time a double-square pulse one with zero area or total impulse, and an impulsive loading with constant decay a delta function at tau 0 followed by a constant deceleration, with zero total area, i.e., a triangular velocity pulse, are also presented. Author
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