Investigating the running abilities of Tyrannosaurus rex using stress-constrained multibody dynamic analysis.

摘要: The running ability of Tyrannosaurus rex has been intensively studied due to its relevance interpretations feeding behaviour and the biomechanics scaling in giant predatory dinosaurs. Different studies using differing methodologies have produced a very wide range top speed estimates there is therefore need develop techniques that can improve these predictions. Here we present new approach combines two separate biomechanical (multibody dynamic analysis skeletal stress analysis) demonstrate true gaits would probably lead unacceptably high loads T. rex. Combining approaches reduces high-level uncertainty previous predictions associated with unknown soft tissue parameters dinosaurs, demonstrates relatively long limb segments rex—long argued indicate competent ability—would actually mechanically limited this species walking gaits. Being speeds contradicts arguments high-speed pursuit predation for largest bipedal dinosaurs like rex, power multiphysics locomotor reconstructions extinct animals.