Structural Impact DynamicsNo Access

NONLINEAR IMPACT DYNAMIC ANALYSIS AND COMPARISON WITH EXPERIMENTAL DATA FOR THE SKID GEAR

School of Mechanical and Aerospace Engineering with Research Center for Aircraft Part Technology, GyeongSang National University, 900 Gazwa, Jinju City, Gyeongnam/660-701, Republic of Korea

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and

YU-SUNG KIM

School of Mechanical and Aerospace Engineering with Research Center for Aircraft Part Technology, GyeongSang National University, 900 Gazwa, Jinju City, Gyeongnam/660-701, Republic of Korea

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https://doi.org/10.1142/S0217979208046840Cited by:1 (Source: Crossref)

Abstract

In this study, nonlinear crash analyses have been conducted for the skid landing gear of helicopter. The realistic configuration of skid landing gear system is considered. Detailed three-dimensional finite element model with variable thickness and material nonlinearity is constructed for required impact design conditions. Advanced computational approach is used to conduct nonlinear transient impact dynamic analyses for different collision models. Characteristics of impact dynamic responses due to the ground crash are practically investigated in detail. It is also shown that the exact consideration of friction effect is very important to accurately predict the crash behavior of the skid type landing gear system. Finally, two typical landing conditions are analyzed and correlated with drop test results.

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