, Google Scholar ScitationĬharlebois, M., Motallebzadeh, H., and Funnell, W. “ The structure of the middle ear and the hearing of one's own voice by bone conduction,” J. “ Static versus dynamic gerbil tympanic membrane elasticity: Derivation of the complex modulus,” Biomech. These conditions correspond to the pressurization involved in tympanometry.Īernouts, J., and Dirckx, J. The model presented here is suitable for modeling large deformations of the tympanic membrane for frequencies less than approximately 3 rad/s or about 0.6 Hz. In addition, a frequency-domain analysis is performed based on the obtained material parameters, and the effect of strain rate is explored. The model output is compared with the relaxation curves and hysteresis loops observed in previous measurements performed on strips of tympanic membrane. The constitutive equation of this model is a convolution integral composed of a non-linear elastic part, represented by an Ogden hyperelastic model, and an exponential time-dependent part, represented by a Prony series. In this study, these two features are combined in a non-linear viscoelastic model. Previous finite-element models of the tympanic membrane, however, have been either non-linear or viscoelastic but not both. If there is a better way to do this than importing the stl and txt files I am happy to change, I would prefer to do this the "right" way now to be able to take advantage of all the capabilities of postview.The mechanical behavior of the tympanic membrane displays both non-linearity and viscoelasticity. This is my first attempt to work with the febio software suite, so I don't know very much about the file formats you use. Also if possible I would like to be able to load the femur cartilage and pressure data and the tibia cartilage and pressure data at the same time.ģ) Is there a way to save a user defined color map?Ĥ) Is there a way to import kinematics as well? This way I could import the femur cartilage and tibia cartilage and show them in motion. I would like to be able to load the cartilage mesh and the bone mesh for visualization. This works well for visualizing pressure maps, however I have the following problems:ġ) it is very tedious because I have to add the time steps individually (usually > 100 for a gait simulation) in the state manager.Ģ) I can only load one stl file. stl file in PostView, use the state manager to add each time step, and then use the data manager to "add data from file". txt file with the pressure values at each node of the mesh for every time step of the simulation. stl file of the cartilage geometry, and a. I am hoping to use postview to visualize my simulated pressure values.Īt the moment I am writing an. I am using an elastic foundation model to compute cartilage contact surface pressures for the knee in a multibody simulation of gait in our custom simulation framework. This release contains many improvements, such as better performance of the reactive viscoelastic framework, faster startup of FSI models, box constraints for constrained levmar optimization, new rendering features, and more. FEBio Studio 1.8 has been released! It comes with FEBio 3.7.The FEBio software downloads and knowledgebase can be found here. This will allow you to stay up to date on recent activity on the forum. You can subscribe to forums by pressing the "Subscribe" button at the top of the forum. Moderators are here to assist with explaining novel features, addressing bug reports and reviewing feature requests, but the effectiveness of the forum depends critically on the participation of experienced users who can assist novices or share ideas and models that explore challenging problems. A broad level of participation is encouraged, to create a vibrant community that helps improve the quality and usefulness of these open-source/free software products. Forum participants are encouraged to post questions, as well as answer posts from others. This forum serves the community of FEBio and FEBio Studio users and developers.
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