跑步機平台骨架之最適化設計

Optimal Design of a Treadmill Frame

鄒明嘉(Ming-Jia Zhou) ； 鄧作樑(Tso-Liang Teng)

《科學與工程技術期刊》 4卷4期 (2008/12) Pp. 7-15

https://doi.org/10.7117/JSET.200812.0007

摘要

在健身跑步機平台骨架設計時，鐵管的規格種類、使用的數量、焊接補強的方式，都影響了跑步機整體強度。一般跑步機在結構強度方面須通過靜力負荷測試及疲勞耐久性測試，然而考量業者缺乏專業量測儀器與技術下，有效運用CAE(computer aided engineering)的技術於跑步機的結構測試，進行結構強度與耐久性試驗的模擬與分析，可縮短產品開發時程並降低研發成本。本研究之目的在於如何利用電腦輔助分析軟體ANSYS建構跑步機結構有限元素模型，並依據法規測試條件進行結構靜力負荷測試與疲勞耐久性測試的數值模擬，藉由電腦模擬分析結果，除確認結構最大應力與變形位置外，並可提供產品結構改善與最適化設計方向。本研究建立之跑步機測試數值模擬，可提供國內製造商在跑步機結構設計上之應用參考，以改善傳統的製造流程，大大提升輕量化的設計能力，有效縮短產品的開發時間，設計出最佳產品。

關鍵字

跑步機 ； 有限元素分析 ； 最適化設計 ； 結構疲勞耐久性測試 ； 靜態負荷測試

並列摘要

The specification, quantity and weld of a steel tube affect the structural strength when designing the frame of a treadmill. For this strength, the frame must pass both static-load and fatigue-durability tests. However, concerns regarding the lack of a measurement device prevent the use of experimental tests. Since computer simulations can precisely perform the requisite structural-strength and fatigue-durability tests, such simulation is an economical and time-efficient alternative to physical testing. In this research, both static-load and fatigue-durability tests on the frame of a treadmill were numerically studied by the finite element analysis of a regulation test using the ANSYS code. The maximum stress and distortion position can be determined on the basis of the numerical results. Moreover, the results can be consulted for improving and optimizing production. To improve manufacturing procedures, create the design capability of lightweight structures and reduce development time, the results and procedures obtained herein have potential for guiding the future development of treadmill designs and technologies.

並列關鍵字

treadmill ； finite element analysis ； optimum design ； fatigue-durability test ； static-load test