Accession Number:

ADA207104

Title:

Strain Analysis of HMMWV (High Mobility Multipurpose Wheeled Vehicle) Front Lift Provision

Descriptive Note:

Final rept.

Corporate Author:

ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB

Report Date:

1989-03-01

Pagination or Media Count:

28.0

Abstract:

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.

Subject Categories:

  • Surface Transportation and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE