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Durability evaluation of the airlift provision for Korean light tactical vehicles based on fatigue test modes

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Abstract

The dynamic stability and structural safety of a tactical vehicle in tactical airlift, contrary to that on the ground, may be drastically reduced due to various flight situations. Airlift provisions that connect a helicopter and a tactical vehicle should be designed to ensure the abovementioned attributes of the vehicle. Moreover, the hard points of the airlift provision should be selected to enable a stable flight. The airlift device should be designed to withstand the ultimate loads in air transportation. A proprietary test standard comparable to the US military standard MIL-STD-209K is crucial for such a design. However, car manufacturers cannot develop a test specification for airlifting. Therefore, a design methodology for developing an airlift system is required, and computational analysis techniques should be developed to simulate tactical airlift situations. A computer-aided engineering approach to verifying the durability of the airlift provision for Korean light tactical vehicles is presented. Static fatigue analyses, according to the US military test modes, are performed to examine the durability of the airlift system. The contribution of fatigue life to fatigue test modes is evaluated, and an effective fatigue loading mode, namely, K mode, is proposed based on these results. We also compared the durability performance of the lightweight model derived from an approximate optimization and that of the base model.

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Authors and Affiliations

  1. Military Vehicle Development Team, Kia Motors Corporation, 277 Hwaun-ro, Seo-gu, Gwangju, 61909, Korea

    Kwonhee Suh

  2. School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Korea

    Hiseak Yoon

Authors
  1. Kwonhee Suh
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  2. Hiseak Yoon
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Corresponding author

Correspondence to Hiseak Yoon.

Additional information

Recommended by Associate Editor Chang-Wan Kim

Kwonhee Suh received his B.S. degree in Mechanical Design Engineering and his M.S. and Ph.D. degrees in Mechanical Engineering from Chonnam National University, South Korea in 1993, 1995, and 2018, respectively. He is currently working for Kia Motors Corporation as a Senior Research Engineer. His research interests are design optimization and computer-aided engineering (CAE) analysis of a multi-purpose vehicle.

Hiseak Yoon received his B.S. degree in Mechanical Engineering from Seoul National University, South Korea in 1978, and his M.S. and Ph.D. degrees in Mechanical Engineering from the University of Delaware, USA in 1984 and 1987, correspondingly. He is currently working as a Professor at the School of Mechanical Engineering at Chonnam National University, South Korea. His research interests are the mechanics of composite material and mechanical behavior of materials.

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Suh, K., Yoon, H. Durability evaluation of the airlift provision for Korean light tactical vehicles based on fatigue test modes. J Mech Sci Technol 32, 1219–1225 (2018). https://doi.org/10.1007/s12206-018-0225-6

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  • DOI: https://doi.org/10.1007/s12206-018-0225-6

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