The High Mobility Multipurpose Wheeled Vehicle (HMMWV) is equipped with two front lifting provisions which support the vehicle during external airlift operations. The U.S. Army Natick Research, Development, and Engineering Center (NRDEC) recently decided to re-evaluate their certification of these provisions based on calculations which suggested the provisions did not meet the specified requirements of MIL-STD-209G, October, 1986, Slinging and Tiedown Provisions for Lifting and Trying Down Military Equipment. Metallographic and nondestructive examinations were performed to detect damage in the strained provisions. An elastic-plastic finite element analysis was used to estimate the material properties and design parameters required to adhere to the specified requirements. Out-of-plane strains were measured during an actual lift of a vehicle. Keyword: Fatigue test; Airlift operations; Rigging; Hoists; Helicopter hoists; Ground vehicles; Steel; Finite element analysis; Specifications. (JES)
Strain Analysis of HMMWV (High Mobility Multipurpose Wheeled Vehicle) Front Lift Provision
1989
28 pages
Report
Keine Angabe
Englisch
Road Transportation , Combat Vehicles , Logistics Military Facilities & Supplies , Airlift operations , Ground vehicles , Military vehicles , Lift , Computations , Elastic properties , External , Fatigue tests(Mechanics) , Finite element analysis , Helicopter hoists , Metallography , Military equipment , Nondestructive testing , Plastic properties , Stress analysis , HMMWV(High Mobility Multipurpose Wheeled Vehicles)
On the Road to HMMWV (High-mobility multipurpose wheeled vehicle)
Kraftfahrwesen | 1983
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