本文關(guān)鍵詞：車輛振動環(huán)境下人體脊椎動態(tài)特性分析　出處：《東北大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 振動 脊椎 靜力分析 模態(tài)分析 諧響應(yīng)分析

【摘要】：隨著汽車工業(yè)的迅猛發(fā)展,人們不僅僅滿足于車輛性能,對車輛乘坐舒適性的要求也越來越高,脊椎在車輛振動環(huán)境下的動態(tài)特性及振動損傷問題也受到了研究者的廣泛關(guān)注。了解人體脊椎的動態(tài)特性及尋找脊椎的振動保護方法值得進一步深入研究。本文對車輛振動環(huán)境下人體脊椎的靜動態(tài)特性進行了研究。 首先,應(yīng)用Mimics和有限元分析軟件ANSYS10.0建立人體脊椎T12-Pelvis三維實體模型,依據(jù)解剖結(jié)構(gòu)添加軟骨和韌帶。對所建立的有限元模型進行分析,并將仿真結(jié)果同已有實驗數(shù)據(jù)作對比,以確保有限元模型的有效性。 其次,應(yīng)用ANSYS Workbench12.1對T12-Pelvis有限元模型每相鄰節(jié)段進行垂直、前俯、后仰、側(cè)彎和外旋坐姿下的靜力分析,對所建立的模型整體進行四種坐姿下的靜力分析。 再次,分析人體脊椎動態(tài)特性對椎間盤材料屬性的敏感度,對人體脊椎T12-Pelvis段有限元模型進行模態(tài)分析,提取固有頻率及振型,研究脊椎在座椅約束下的動態(tài)特性。 最后,對人體脊椎T12-Pelvis有限元模型進行諧響應(yīng)分析,仿真結(jié)果同靜態(tài)特性分析結(jié)果作對比,研究車輛行駛中動載荷對人體脊椎的影響。本文的研究結(jié)果為車輛座椅的設(shè)計提供了有力的參考。
[Abstract]:With the rapid development of automobile industry, people are not only satisfied with the performance of vehicles, but also have higher and higher requirements for ride comfort. The dynamic characteristics and vibration damage of the spine in the vehicle vibration environment have also received extensive attention. It is worth further study to understand the dynamic characteristics of the human spine and to find the method of vibration protection of the spine. The static and dynamic characteristics of human spine under vehicle vibration were studied. Firstly, the three-dimensional solid model of human spine T12-Pelvis is established by using Mimics and finite element analysis software ANSYS10.0. By adding cartilage and ligaments according to the anatomical structure, the finite element model is analyzed, and the simulation results are compared with the experimental data to ensure the validity of the finite element model. Secondly, ANSYS Workbench12.1 is applied to the finite element model of T12-Pelvis vertical, forward and backward for each adjacent segment. The static analysis of lateral bending and external rotation is carried out, and the static analysis of the whole model is carried out under four kinds of sitting positions. Thirdly, the sensitivity of the dynamic characteristics of the human spine to the material properties of the intervertebral disc is analyzed, and the modal analysis of the finite element model of the T12-Pelvis segment of the human spine is carried out to extract the natural frequency and vibration pattern. The dynamic characteristics of spine under seat constraint are studied. Finally, the harmonic response of the T12-Pelvis finite element model of human spine is analyzed, and the simulation results are compared with the static characteristic analysis results. The effect of vehicle dynamic load on human spine is studied. The results of this paper provide a powerful reference for the design of vehicle seat.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：U463.836;R322

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