其实测试结果差异的根本原因,在于测试标准的不一致:
包括速度,角度,撞击物的质量,结构等等
还有,是车去撞击固定物,还是一定质量的移动物撞击车辆
也是不一样的;
后者固定了撞击物的质量;前者由于车的质量差异,
撞击能量也有不通;(速度一样)
另外,任何级别的车,都用固定质量的移动物体去撞击,试验层面上显得客观,但是由于实际车重差异,是不是是个客观的评价方式呢? 还是针对不通质量级别的车,采用不通的质量的移动物体撞击更合理? 比如同一款车型,装备质量不同,是不是对测试结果也有很大影响?
我不清楚,不过也不是我论文主要关心的地方.:)
NHTSA的测试,类似强制性,入门级别测试;
100%正碰还是在NHTSA测试中用,
但在Euro-NCAP测试中,已经废弃20多年了.原因是说,40%碰撞更适合实际...
另外,euro的side pole impact 测试,个人认是对Frontal offset的头部的放大测试;
至于国内的 C-NCAP,可能更接近美国的us-ncap.
http://www.euroncap.com/Content-Web-Page/106f41f7-d486-46bf-bfbc-80fb4c79f679/car-to-car-side-impact.aspx
Three of the ULSAB-AVC tests involve higher impact speeds and/or greater loads than the 2000 U.S. NHTSA standards. Two tests, the side pole impact and the Euro-NCAP offset test, are not included in the U.S. government standards. The current Euro-NCAP Offset Deformable Barrier test (Figure I.4) replaces the 20-year old frontal impact test, which involved a full width, head-on, impact into a solid concrete barrier. The problem with the frontal test was that it did not yield the specifics of collisions between two cars. Actually, most frontal car collisions tend to pierce the softer surrounding structure and transmit the energy to other parts of the vehicle. The new Euro-NCAP test, called the Offset Deformable Barrier (ODB) test, is a simulation of both the partial overlap of typical frontal collisions and the real frontal structure of a typical car, by using a deformable impact surface and a 40% impact offset. An example of the Euro-NCAP side impact test is shown in Figure I.5. The side pole is to simulate the side impact collisions when a car runs into the side of another or into a fixed narrow object such as a tree or pole. Before 2009, Euro-NCAP has allowed the manufacturer to perform a pole test to demonstrate the efficacy of the head protection system where this safety feature is fitted. The assessment focused on the head only and the result was used to augment the side impact score achieved in the ODB side impact test. As of 2009, the pole test has become mandatory.
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修改:thinkpadfan FROM 141.223.237.*
FROM 141.223.237.*