車架與前叉組合件之模型驗證與衝擊試驗響應預測

Model Verification of Frame and Front Fork Assembly and Response Prediction for Impact Test

王栢村(Bor-Tsuen Wang) ； 陳昱成(Yu-Cheng Chen)

《機械技師學刊》 4卷2期 (2011/06) Pp. 26-33

https://doi.org/10.6208/JPME-2011-02-06

摘要

隨著消費者對自行車安全認證規範、性能以及舒適性的品質要求越來越高，對自行車設計者而言，為能提昇競爭，縮短開發時程，電腦輔助工程分析(Computer Aided Engineering, CAE)技術逐漸導入設計開發流程，本文對各零組件以結構組合層次之模型驗證堆疊概念，結合理論有限元素分析及實驗模態分析，分別針對自行車結構之車架、前叉、及車架與前叉組合結構進行模型驗證，以獲得等效於實際結構之有限元素模型；藉此驗證後模型進行響應預測分析，參考歐盟EN14764城市與旅行自行車試驗規範之垂直力衝擊試驗試驗，透過預測結果判斷車架與前叉組合結構受力後變形量與應力強度是否符合規範。本文建立設計變更的模型驗證與響應預測之前置作業流程，在未來可直接應用進行結構設計變更。

關鍵字

有限元素分析 ； 實驗模態分析 ； 模行驗證 ； 響應預測 ； 歐盟EN14764規範

並列摘要

Computer aided engineering (CAE) technique has been adapted to product design for increasing industry competitive ability and reducing development efforts. This work integrates both finite element analysis (FEA) and experimental modal analysis (EMA) techniques to perform model verification of bicycle components for product design analysis. The step-by-step model verification of the frame, front fork, and the frame and front fork assembly for the substructures of bicycle is, respectively, carried out to validate the FE models equivalent to the real structures. The EN14764 standard for the vertical impact test of city trekking bicycles is considered. The validated FE model of the frame and front fork assembly structure can then be applied to predict the structural deformation and stress distributions. This work establishes the procedure for design modification, especially for the pre-study of structural model verification and response prediction. The developed methodology can be useful for bicycle industry in structural design analysis.

並列關鍵字

Finite Element Analysis FEA ； Experimental Modal Analysis EMA ； Model Verification ； Response Prediction ； EN 14764 standard