| Converging spherical and cylindrical elastic–plastic waves of small amplitude |
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| 引用本文： | 胡秋实,赵锋. Converging spherical and cylindrical elastic–plastic waves of small amplitude[J]. 中国物理 B, 2014, 0(9): 321-326 |
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| 作者姓名： | 胡秋实 赵锋 |
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| 作者单位： | Laboratory for Shock Wave and Detonation Physics Research,Institute of Fluid Physics,China Academy of Engineering Physics |
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| 摘 要： | Converging spherical and cylindrical elastic–plastic waves in an isotropic work-hardening medium is investigated on the basis of a finite difference method. The small amplitude pressure is applied instantaneously and maintained on the outer surface of a spherical or a cylindrical medium. It is found that for undercritical loading, the induced wave structure is an elastic front followed in turn by an expanding plastic region and an expanding elastic region. For supercritical loading, the elastic front is followed in turn by an expanding plastic region, a narrowing elastic region and an expanding plastic region.After yielding is initiated, the strength of the elastic front is constant and equal to the critical loading pressure. The motion of the continuous elastic–plastic interface is discussed in detail. Spatial distributions of pressure near the axis show the strength of the converging wave is nearly doubled in the reflecting stage.
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| 关 键 词： | converging waves spherical waves cylindrical waves elastic–plastic waves |
Converging spherical and cylindrical elastic-plastic waves of small amplitude |
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| Hu Qiu-Shi,Zhao Feng. Converging spherical and cylindrical elastic-plastic waves of small amplitude[J]. Chinese Physics B, 2014, 0(9): 321-326 |
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| Authors: | Hu Qiu-Shi Zhao Feng |
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| Abstract: | converging waves, spherical waves, cylindrical waves, elastic-plastic waves |
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| Keywords: | converging waves spherical waves cylindrical waves elastic-plastic waves |
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