BASIC RESEARCH IN CRASHWORTHINESS II-LARGE DEFLECTION DYNAMIC ANALYSIS OF PLAE ELASTOPLASTIC FRAME STRUCTURES INCLUDING THE CASES OF COLLISION INTO A POLE OR FLAT BARRIER

THE PRE- AND POST-COLLAPSE DYNAMIC RESPONSE OF A PLANE IDEAL, ELASTO-PLASTIC FRAME STRUCTURE SUBJECTED TO LARGE DYNAMIC FORCES IS STUDIED IN A GENERAL MANNER. IT IS ASSUMED THAT THE RIGID FRAME STRUCTURE IS COMPOSED OF UNIFORM STRAIGHT BEAM MEMBERS MADE OF IDEAL, ELASTO-PLASTIC MATERIAL: 'STRAINS' ARE EVERYWHERE SMALL EXCEPT AT 'JOINTS' WHERE LARGE PLASTIC DEFORMATION (FLOW) MAY OCCUR; MASSES ARE PUMPED AND EXTERNAL FORCES ARE APPLIED AT A FINITE NUMBER OF STRUCTURAL POINTS; THE EFFECTS OF AXIAL FORCES ON MATERIAL YIELDING AND RESULTING PLASTIC DEFORMATIONS ARE NEGLIGIBLE WHEN COMPARED WITH THOSE OF BENDING MOMENTS, AND THE FRAME STRUCTURE MAY UNDERGO LARGE RIGID BODY MOTION (TRANSLATIONS AND ROTATIONS). THE ANALYSIS IS APPLIED TO THE CASES OF A MOVABLE FRAME STRUCTURE COLLIDING INTO A NARROW RIGID OBSTACLE AND SYMMETRICALLY INTO A MASSIVE RIGID FLAT BARRIER (OR INTO ANOTHER IDENTICAL FRAME STRUCTURE). IN THIS APPLICATION, IT IS ASSUMED THAT THERE IS NO SLIDING MOTION BETWEEN THE STRUCTURE AND THE OBSTACLE. /NTIS/

• Supplemental Notes:
  • REP NO YB-2987-V-7
• Corporate Authors:

  Calspan Corporation

  4455 Genesee Street
  Buffalo, NY  United States  14225
• Publication Date: 1972-12

Media Info

• Pagination: 325 p.

Subject/Index Terms

• TRT Terms: Bending moments; Computer programs; Crash injury research; Crash tests; Crashes; Crashworthiness; Dynamic loads; Motor vehicle bodies; Plastic deformation; Research; Simulation; Strain (Mechanics); Structural engineering
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Automobile bodies; Strains
• Subject Areas: Highways; Research; Safety and Human Factors;

Filing Info

• Accession Number: 00224410
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Intrm Rept
• Files: TRIS
• Created Date: Jul 31 1974 12:00AM