抗爆缓冲材料动态力学特性及微观破裂分析

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Abstract The energy absorption property of closed-cell foam metals with matrix Al，matrix Al-Si12，matrix Al-Si6，matrix Mg，matrix Al-fiber and matrix RE-Al alloys are investigated by the compression，impact and split Hopkinson pressure bar(SHPB) test. And the micro-mechanics failure mechanism of closed-cell foam metals is discussed. Quasi-static experiment results show that the mechanical properties of different foam metals are different，and the maximum of compressive strength is about 5 MPa. Impact test results indicate that the maximum of compressive strength and absorbing energy value are about 15 MPa and 29 J，respectively. The closed-cell foam metals exhibit good energy-absorption ability on the optimal conditions that density is 0.35–0.70 g/cm3，porosity is 65%–87% and pore diameter is 1.0–4.0 mm. The micro-morphology of closed-cell foam metal with matrix Al is obvious tear trace，indicating that it has toughness characteristics. Compared with quasi-static experiment results，closed-cell foam metals with matrix Al is good for energy absorption materials because of its high absorbing energy value and deformation. Similar experimental results show that bolt and U steel support roadway have impact deformation or damage，and the blunt support roadway is better in integrity.

Key words： mining engineering closed-cell foam metal dynamic mechanical properties energy absorption ability microcosmic rupture morphology rockburst prevention support

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	Articles by authors
	LU Xiangfeng1
	2
	PAN Yishan2
	XIAO Xiaochun2
	3

Cite this article:

LU Xiangfeng1,2,PAN Yishan2, et al. ANALYSIS OF DYNAMIC MECHANICAL PROPERTIES AND MICROCOSMIC RUPTURE OF ANTI-EXPLOSION BUFFER MATERIALS[J]. , 2012, 31(S1): 2821-2828.

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https://rockmech.whrsm.ac.cn/EN/Y2012/V31/IS1/2821

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