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

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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1989
Accession Number
ADA207104

Entities

People

  • John F. Beatty
  • John H. Beatty
  • John Nunes
  • Morris Azrin
  • Paul V. Cavallaro
  • Robert E. Pasternak

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Transportation
  • Airlift Operations
  • Data Acquisition
  • Electron Microscopes
  • Engineering
  • Fatigue Tests (Mechanics)
  • Finite Element Analysis
  • Ground Vehicles
  • Materials
  • Materials Testing
  • Mechanics
  • Military Research
  • Static Tests
  • Structural Components
  • Test And Evaluation
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Logistics and Supply Chain Management.
  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design