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 LIANG Li-fu*,LIU Zong-min and GUO Qing-yong.Application of the generalized quasi-complementar energy principle to the fluid-solid coupling problem[J].Journal of Marine Science and Application,2009,(1):40-45.
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Application of the generalized quasi-complementar energy principle to the fluid-solid coupling problem


Application of the generalized quasi-complementar energy principle to the fluid-solid coupling problem
LIANG Li-fu* LIU Zong-min and GUO Qing-yong
LIANG Li-fu* LIU Zong-min and GUO Qing-yong
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
fluid-solid coupling elasto-dynamics generalized quasi-complementary energy
The fluid-solid coupling theory, an interdisciplinary science between hydrodynamics and solid mechanics, is an important tool for response analysis and direct design of structures in naval architecture and ocean engineering. By applying the corresponding relations between generalized forces and generalized displacements, convolutions were performed between the basic equations of elasto-dynamics in the primary space and corresponding virtual quantities. The results were integrated and then added algebraically. In light of the fact that body forces and surface forces are both follower forces, the generalized quasi-complementary energy principle with two kinds of variables for an initial value problem is established in non-conservative systems. Using the generalized quasi-complementary energy principle to deal with the fluid-solid coupling problem and to analyze the dynamic response of structures, a method for using two kinds of variables simultaneously for calculation of force and displacement was derived.


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Last Update: 2010-04-19