METHODS, APPLICATION AND COST EFFECTIVENESS OF SCALE MODEL STUDIES OF AUTOMOBILE IMPACTS

The utility of scale model experiments for crashworthiness research is examined in a two part study. The accuracy, applicability and cost effectiveness of scale model experiments are studied in Part I. The accuracy of modeling is shown by direct comparison between a scale model experiment and the test of a full-scale automobile in high speed impact. It is concluded that scale models can replace full scale experiments with good accuracy for many applications. The applicability of modeling to a wide variety of structural elements is demonstrated by scale model experiments with five hydraulic and plastic-deformation energy absorbers. Then the cost effectiveness of scale modeling is assessed by comparing the costs of full scale experiments with scaled experiments that meet the same objectives. These comparisons include both individual tests (factor of four cost savings) and complete vehicle development programs which include full scale evaluation tests (overall savings of a factor of 2.5). The time required to perform scale model tests is about one-third that of full scale tests. It is concluded that scaled experiments reduce the cost, increase the flexibility, and hasten the completion of the program. An application of scale models in a vehicle development program is given in Part II. Scale model experiments are used to develop frontal structures for subcompact cars. Two different concepts are evaluated for another DOT contractor during the design stage of their vehicle development program. /Author/

  • Corporate Authors:

    Stanford Research Institute

    333 Ravenswood Avenue
    Menlo Park, CA  United States  94025
  • Authors:
    • Holmes, B S
    • Sliter, G E
  • Publication Date: 1974-9

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 144 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00098830
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Report/Paper Numbers: SRI-FR-PYU02766 Final Rpt.
  • Contract Numbers: DOT-HS-199-3-732
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM