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FINITE-ELEMENT MODELING OF G2 GUARDRAIL.
| 题名： | FINITE-ELEMENT MODELING OF G2 GUARDRAIL. |
| 作者： | Hendricks-BF; Wekezer-JW |
| 关键词： | FINITE-ELEMENT-ANALYSIS; COMPUTER-SIMULATION-MODELS; FLEXIBLE-GUARDRAILS; W-BEAMS; STEEL-POSTS; SOIL-STRUCTURE-INTERACTION; CONNECTIONS-; COLLISION-TESTS; IMPACT-SPEED; IMPACT-ANGLE |
| 摘要： | A finite-element model of the AASHTO G2 guardrail (weak-post W-beam) was developed and analyzed under vehicle impact conditions by using LLNL-DYNA3D, a nonlinear, explicit, three-dimensional, public-domain, finite-element code. The modeling procedures and problems encountered are described, and suggestions for further research are given. W-beam and S3 x 5.7 steel post mesh optimization procedures and results are described. A suitable point of fixity for the posts to account for soil effects is determined. W-beam-to-post connections were investigated by three different methods. Impact influence lengths and problems associated with modeling flexible barriers are discussed. The steps taken to assemble a model, including a prebuilt vehicle model, are given. The G2 guardrail was struck with the 820C vehicle model, developed by FHWA, at a speed of 26.69 m/sec (59.7 mph) and an angle of 15.4 degrees. |
| 总页数： | Transportation Research Record. 1996. (1528) pp130-137 (10 Fig., 1 Tab., 10 Ref.) |
| 报告类型： | 科技报告 |
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