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Related But Non Dino Question Re: doing computer simulations of locomotion right



On Tue, 22 Apr 2003, John R Hutchinson wrote:
> [...]
> I'd actually disagree in this case, although it is an interesting 
> paper.  Some of the results contradict reality in humans.  For example, 
> note the extremely dorsiflexed ankle joint; that will easily lead to 
> erroneous estimates of muscle force and energy requirements.  Trust me, I 
> have the model that is used and it can be shown directly.  I don't know if 
> Greg realizes this, but the model they use is the SIMM (Software for 
> Interactive Musculoskeletal Modeling) human model that was developed in the 
> lab I am working in!  And it does not seem that Greg realizes that these 
> models use standard biomechanics as their core functions; you cannot get 
> power requirements without it. The original SIMM/SDFast simulations produce 
> excellent results for normal humans but for some reason Sellars et al. are 

Just out of curiousity, what modeling software has been used on old
hominids? There has been at least one simulation done that I'm aware of an
australopithecine walk...

> [...]