臺灣博碩士論文加值系統

工程塑膠在現今工程或是生活上使用量除漸增加，塑膠材料重量輕、高強度、耐疲勞、耐磨耗、耐蝕性、耐衝擊、尺寸安定等多項優點，達到了許多材料無法達成的好處，對於應用上，對於塑膠材料上設計的參數數據不足，導致無法有效掌控材料壽命，增加了使用塑膠材料的困難，所以使用塑膠材料之前，需要找出影響材料的各項因素，避免不必要的損失。
本論文利用拉伸實驗搭配ANSYS有限元素軟體分析以及Matlab程式語言計算，找出PBT工程塑料潛變參數之方法。在實驗方面，使用自行設計的拉伸試驗器及試片，再利用實驗結果透過Matlab曲線擬合潛變方程式找出潛變參數，將相關參數套入有限元素分析軟體模擬試片的潛變，由軟體所分析出之結果與實驗值做比較、調整，探討Matlab曲線擬合算出的潛變參數對於實際應用上的幫助。
實驗結果發現，直接使用Matlab計算出的潛變參數會有誤差，因此需要將Matlab計算出來的潛變參數做調整，並且對參數調整過程進行探討，不同參數都會影響到數值變化，需要對不同調整法進行分析，來找到最合適的調整方法來找出正確的潛變參數，最後調整參數後所呈現的潛變曲線將能近似於拉伸實驗之曲線。
整體探討得知，Matlab對於計算找出潛變參數是有一定幫助的，計算速度大大的提升了效率，但是無法直接性的通過Matlab求得潛變參數，需要經過有效且合理的調整來取得最接近準確的參數。

The use of engineering plastics in engineering and daily life is increasing nowadays. Plastic materials have many advantages such as light weight, high strength, fatigue resistance, wear-resistance, corrosion resistance, impact resistance, and stable dimensions. Due to the data designed on the plastic material is insufficient practically, it makes us unable to control the lifetime of the material effectively and increases the difficulty of using plastic materials. Therefore, we need to find out the various factors that affect the material and avoid unnecessary losses before using plastic materials.
In this paper, I found the method of plastic material creep parameter by using tensile testing with ANSYS finite element software analysis and Matlab programming language calculation. In terms of experiment, I used my designed tensile tester and test piece first, and found experimental results to get the creep parameters through Matlab curve fitting creep equation, I put the relevant parameters into the finite element analysis software to simulate the latent change of the test piece finally. At last, I explore the help of the latent parameters calculated by Matlab curve fitting for practical applications with comparing and adjusting the analysis results and experimental values.
According to the experiment, this needs to adjust the latent variable parameters calculated by Matlab and explore the parameter adjustment process or there will be errors by using Parameters calculated by Matlab directly. Different parameters will affect the value change, this need to analyze different adjustment methods to find out the most suitable adjustment method and get the correct latent parameter. After using the correct latent parameter, the creep curve will be similar to the curve of the tensile experiment.
Overall, Matlab's calculation speed greatly improves efficiency for finding latent parameters, but it still needs to be adjusted effectively and reasonably to obtain the closest accurate parameters.

中文摘要……………………………………………………………………………………………………i
英文摘要………………………………………………………………………………………………iii
誌謝………………………………………………………………………………………………………………v
目錄……………………………………………………………………………………………………………vi
表目錄…………………………………………………………………………………………………viii
圖目錄………………………………………………………………………………………………………ix
符號說明……………………………………………………………………………………………………x
第一章緒論………………………………………………………………………………………………1
1.1緒論背景……………………………………………………………………………………………1
1.2研究目的……………………………………………………………………………………………2
1.3研究方法……………………………………………………………………………………………2
第二章文獻探討………………………………………………………………………………………3
第三章塑膠材料單軸拉伸實驗…………………………………………………………6
3.1實驗方法……………………………………………………………………………………………6
3.1試片規範……………………………………………………………………………………………7
3.2實驗步驟……………………………………………………………………………………………7
3.3作用力與應力…………………………………………………………………………………8
3.4實驗結果…………………………………………………………………………………………10
第四章潛變參數計算與潛變模擬分析實驗………………………………12
4.1實驗方法…………………………………………………………………………………………12
4.2實驗步驟…………………………………………………………………………………………12
4.3Matlab非線性曲線擬合……………………………………………………………13
4.3.1潛變數學模型……………………………………………………………………………13
4.3.2潛變參數………………………………………………………………………………………14
4.3.3非線性曲線擬合………………………………………………………………………15
4.3.4潛變參數計算方法……………………………………………………………………16
4.3.5潛變參數計算結果……………………………………………………………………18
4.4ANSYS潛變模擬分析……………………………………………………………………20
4.4.1模擬架構………………………………………………………………………………………20
4.4.2潛變模擬參數……………………………………………………………………………20
4.4.3潛變模擬結果……………………………………………………………………………21
第五章探討潛變參數對潛變曲線的影響及調整………………………23
5.1ANSYS模擬結果探討……………………………………………………………………23
5.1.1探討潛變參數對潛變曲線影響……………………………………………23
5.1.2潛變參數調整……………………………………………………………………………26
5.2潛變模擬結果…………………………………………………………………………………26
第六章總結………………………………………………………………………………………………28
6.1結論……………………………………………………………………………………………………28
6.1.1結論分析………………………………………………………………………………………28
6.1.2理論實務建議……………………………………………………………………………28
6.1.3研究限制………………………………………………………………………………………28
6.2未來方向……………………………………………………………………………………………29
參考文獻 ……………………………………………………………………………………………30
附錄一 …………………………………………………………………………………………………32
附錄二 …………………………………………………………………………………………………34
附錄三 …………………………………………………………………………………………………36
附錄四 …………………………………………………………………………………………………37
英文論文大綱 …………………………………………………………………………………39

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