Investigating the running abilities of Tyrannosaurus rex using stress-constrained multibody dynamic analysis.
Investigating the running abilities of Tyrannosaurus rex using stress-constrained multibody dynamic analysis.
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作者：
Sellers WI;Pond SB;Brassey CA;Manning PL;Bates KT
暴龙霸王龙的奔跑能力一直被广泛研究，因为它与解释巨型食肉恐龙的觅食行为和鳞片的生物力学有关。使用不同方法的不同研究产生了非常广泛的最高速度估计，因此需要开发能够改进这些预测的技术。在这里，我们提出了一种新的方法，它结合了两种独立的生物力学技术(多体动力学分析和骨骼应力分析)来证明真正的跑步步态可能会导致霸王龙不可接受的高骨骼负荷。将这两种方法结合起来，减少了先前预测中与恐龙软组织参数未知相关的高度不确定性，并证明了霸王龙相对较长的肢体节段--长期以来一直被认为表明有能力跑步--实际上会机械地将该物种限制在行走步态上。仅限于行走速度与霸王龙等最大的两足恐龙的高速追逐捕食的论点相矛盾，并展示了多物理方法在运动重建灭绝动物方面的力量。
The running ability of Tyrannosaurus rex has been intensively studied due to its relevance to interpretations of feeding behaviour and the biomechanics of scaling in giant predatory dinosaurs. Different studies using differing methodologies have produced a very wide range of top speed estimates and there is therefore a need to develop techniques that can improve these predictions. Here we present a new approach that combines two separate biomechanical techniques (multibody dynamic analysis and skeletal stress analysis) to demonstrate that true running gaits would probably lead to unacceptably high skeletal loads in T. rex. Combining these two approaches reduces the high-level of uncertainty in previous predictions associated with unknown soft tissue parameters in dinosaurs, and demonstrates that the relatively long limb segments of T. rex—long argued to indicate competent running ability—would actually have mechanically limited this species to walking gaits. Being limited to walking speeds contradicts arguments of high-speed pursuit predation for the largest bipedal dinosaurs like T. rex, and demonstrates the power of multiphysics approaches for locomotor reconstructions of extinct animals.
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影响因子：
--
作者：
CAVAGNA, GA;HEGLUND, NC;TAYLOR, CR
通讯作者：
TAYLOR, CR
影响因子：
56.9
作者：
BIEWENER, AA
通讯作者：
BIEWENER, AA
DOI：
10.1098/rspb.2010.2497
发表时间：
2011-09-07
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Carbone C;Turvey ST;Bielby J
通讯作者：
Bielby J
影响因子：
2.4
作者：
Al Nazer, R.;Rantalainen, T.;Mikkola, A.
通讯作者：
Mikkola, A.
影响因子：
56.9
作者：
BIEWENER, AA
通讯作者：
BIEWENER, AA