| 摘要: | 隨著台灣邁入高齡化社會，電動代步車等醫療輔具已逐漸受到重視。本研究旨在整合CAD與CAE等電腦模擬技術，作為電動代步車的設計與開發之參考。內容將探討前避震系數、後避震係數、座椅位置與車架構成四種因素，對於車架的乘坐舒適性、應力與脊椎損傷之影響。首先，使用Solid Works建立電動代步車模型，並轉入ADAMS進行機構動態模擬，將獲得之電動代步車之車架結構在路面行駛時的加速度及負荷歷程做後續應用。根據ISO 2631-1，將所得之加速度加權後進行乘適性的比較；負荷歷程則作為ANSYS分析車架應力之用；應用SolidWorks/Simulation，以所得之座椅加速度進行脊椎力學分析，再結合ISO 2631-5規範進行脊椎損傷評估。 乘適性之最佳化條件為：前避震(K=16)、後避震(K=14)、座椅位置(A)、車架構成(原型)。主車架應力之最佳化條件為：前避震(K=20)、後避震(K=18)、座椅位置(A)、車架構成(改良版)。脊椎損傷之最佳化條件為：前避震(K=20)、後避震(K=14)、座椅位置(A)、車架構成(原型)。Because of the aging population, electric mobility scooter was being taken seriously. The purpose of this study is to integrate the technology of computer simulation, and being the reference in electric mobility scooter design. Finally, we discuss the difference among the riding comfortableness, stress of frame and spinal cord injury with the following factors. The factors of this study include the coefficient of the front and back suspension, the location of seat and the frame construction.At first, we use Solid Works to produce the model of the scooter, and turn it into ADAMS for carrying on dynamic simulation. The data produced by ADAMS can be used in calculation of the following evaluation. According to ISO 2631-1, we can get weighted RMS acceleration from seat to compare the riding comfortableness. The loading history is used to analyze the stress of the frame. By Combining the spine mechanical analysis and ISO 2631-5, we can evaluate the spinal cord injury.The optimization condition of riding comfortableness: front suspension (K=16), back suspension (K=14), location of seat (A), frame construction (original). The optimization condition of main frame stress: front suspension (K=20), back suspension (K=18), location of seat (A), frame construction (improved). The optimization condition of spinal cord injury: front suspension (K=20), back suspension (K=14), location of seat (A), frame construction (original). |
