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Journals / International Journal of Automotive Science and Technology / 2019 / Volume: 3 Issue: 4

Modal Analysis Of Automotive Rear Lamp Lens Produced From Plastic Material

Erhan Ay(Magneti Marelli MAKO Elektrik Sanayi ve Ticaret A.Ş.)0000-0001-9621-6030
Bariş Ediz(Magneti Marelli MAKO Elektrik Sanayi ve Ticaret A.Ş.)0000-0002-2704-7090
Taner Çal(Magneti Marelli MAKO Elektrik Sanayi ve Ticaret A.Ş.)0000-0003-3651-7872
Sevda Telli Çetin(ULUDAĞ ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0002-3281-9112
Pages
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Publication Date
2019-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Finite Element Analysis (FEA) results and test results were compared and the best test method was determined.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study; first of all, finite element undamped modal analysis was performed on one of the automotive rear lamp lenses and were obtained natural frequencies and mode shapes.
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Key Findings & Data:Then, Frequency Response Functions (FRF) of an automotive rear lamp lens, made of polymethyl methacrylate (PMMA) material, were obtained by using Impact Hammer Test Methods.
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Conclusion & Impact:Finite Element Analysis (FEA) results and test results were compared and the best test method was determined.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Automotive Rear Lamp · Finite Element Analysis · Frequency Response Function (FRF)

Abstract

In this study; first of all, finite element undamped modal analysis was performed on one of the automotive rear lamp lenses and were obtained natural frequencies and mode shapes. Then, Frequency Response Functions (FRF) of an automotive rear lamp lens, made of polymethyl methacrylate (PMMA) material, were obtained by using Impact Hammer Test Methods. At the same time; dynamic characteristics of the structure, natural frequencies, damping ratios and mode shapes were obtained. Damping ratios were calculated from the FRF’s by using the Half Power Method. Finite Element Analysis (FEA) results and test results were compared and the best test method was determined.

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Cite This Article

Ay, E., Ediz, B., Çal, T., Çetin, S. T. (2019). Modal Analysis Of Automotive Rear Lamp Lens Produced From Plastic Material. International Journal of Automotive Science and Technology, Volume: 3 Issue: 4. https://doi.org/10.30939/ijastech..578812

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References (5)

  1. Avitabile, P. (2001). Experimental Modal Analysis. Sound and Vibration
  2. Anonymous, Modal Tips: Roving Hammer versus Roving Accelerometer. https://community.plm.automation.siemens.com/t5/Testing-Knowledge-Base/Modal-Tips-Roving-Hammer-versus-Roving-Accelerometer/ta-p/378619
  3. Ewins, D.J. (1995). Modal Testing: Theory and Practice, John Wiley and Sons, Inc. New York.
  4. Anonymous, How to calculate damping from a FRF?. https://community.plm.automation.siemens.com/t5/Testing-Knowledge-Base/How-to-calculate-damping-from-a-FRF/ta-p/355050
  5. He, J., Fu, Z. F. 2001. Modal analysis, Butterworth-Heinemann, Oxford.