The process of soft landing divided into two parts, the process of airbag attenuation and the process of contact between the cargo and ground. In the first process, based on the energy conservation principle and thermodynamic equations, an analytical model of airbag attenuation system was established, then the attenuation properties could be got, and the cargo’s velocity and rotation angle before contact could be computed; in the second process, based on the theory of rigid-body dynamics and contact dynamics, an contact model between ground and the cargo with level initial velocity was built, the cargo’s velocity and rotation angle after impact could be got, then the stability of soft landing could be judged.
Key words
airbag /
cushion /
contact /
impact /
stability
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 温金鹏，李斌，谭德伟等. 考虑织布弹性的软着陆气囊缓冲特性研究[J].振动与冲击.2010,29(2),79-83. Wen, JP;Li, B;Yang, ZC TI. Study on cushioning characteristics of soft landing airbag with elastic fabric[J].
[2] 李建阳，王红岩，芮强，等.自充气式气囊缓冲特性试验研究[J].振动与冲击,2014,33(4):119-123.
LI Jian-yang,WANG Hong-yan,RUI Qiang,et al.Tests for cushioning characteristics of a self-inflating airbag[J]. Journal of Vibration and Shock,2014,33(4):119-123.
[3] J. T. Wang, O. J. Nefske, A New CLA3D Airbag Inflation Model[J], SAE paper 880654,1988.
[4] Ch.Glocker, F.Pfeiffer, Miinchen. Complementarity problems in multibody systems with planar friction[J], Archive of Applied Mechanics, 1993, 63(7), 452-463.
[5] 张延教，高等动力学[M]，南京理工大学出版社，2003.
Zhang Yanjiao, Advanced Dynamics[M], Nanjing University of Science and Technology, 2003.
[6] 彼得•艾伯哈特，胡斌，现代接触动力学[M]，东南大学出版社，2003.
Peter Eberhard, Hubin . Advanced Contact Dynamics[M], Southeast University Press, 2003.
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}
PDF(1176 KB)
