基于體壓分布的人椅界面接觸方案分析
首發時間:2022-05-07
摘要:以腰椎肌肉骨骼模型為基礎,建立了全身肌肉骨骼生物力學模型,提出了一種根據體壓分布設置接觸方案的方法,根據體壓分布實驗的分區結果,將相對接觸強度設置為臀部、腿部、腳部垂向力的相對大小,使得模型的求解精度得到提高,對比了不同平均接觸強度對求解精度的影響。將人體與座椅之間的接觸分別采用6個、8個和14個接觸點來代替,綜合來看可選擇設置8個接觸點。通過與文獻中的實驗測量數據進行對比分析,表明基于體壓分布設置接觸強度能準確反映肌肉激活度、關節力等生物力學指標。
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Analysis of contact scheme between human and seat interface based on pressure distribution
Abstract:Based on the musculoskeletal model of lumbar spine, a full-body model model was established, and a method of setting the contact scheme according to the pressure distribution was proposed,the relative contact strength is set as the relative magnitude of the vertical force of the hips, legs and feet, which improves the solution accuracy, and compares the effects of different average contact strength on the solution accuracy.The contact between the human body and the seat is replaced by 6, 8 and 14 contact points respectively. In general, 8 contact points can be selected. By comparing with the experimental measurement data in the literature, it is shown that setting the contact strength based on the pressure distribution can accurately reflect muscle activation and joint force.
Keywords: Pressure distribution Musculoskeletal model Human biomechanics
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