The Safety Analysis of Large Construction Machinery based on Safety Factor

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (8) : 55-57.

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The Safety Analysis of Large Construction Machinery based on Safety Factor

Yang Shaopu1 ,Wang Liying2 ,Pan Cunzhi1

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Abstract

In terms of the structure characteristics of large construction machinery, the safety of large construction machinery is analyzed by man-machine environment, the concept of safety factor is put forward and the safety factor subset is built. The safety factor is discussed from concept, definition to criterion. By using numerical simulation method, the modal strain energy and dynamic stiffness is applied to the structure damage recognition of the girder in the bridge erecting machine, the simulation results show that, compared with other methods, the safety factor can accurately judge the existence of structural damage, it can more accurately judge the damage location and degree of structure, illuminating that this method has a higher damage diagnosis precision.

Key words

large construction machinery / safety factor subset / modal strain energy / dynamic stiffness / safety analysis

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Yang Shaopu;Wang Liying;Pan Cunzhi. The Safety Analysis of Large Construction Machinery based on Safety Factor[J]. Journal of Vibration and Shock, 2013, 32(8): 55-57