7 papers
An online-adaptive hyperreduced reduced basis element method for parameterized component-based nonlinear systems using hierarchical error estimation
Mehran Ebrahimi, Masayuki Yano
We present an online-adaptive hyperreduced reduced basis element method for model order reduction of parameterized, component-based nonlinear systems. The method, in the offline ph…
Configuration Design of Mechanical Assemblies using an Estimation of Distribution Algorithm and Constraint Programming
Hyunmin Cheong, Mehran Ebrahimi, Adrian Butscher +1
A configuration design problem in mechanical engineering involves finding an optimal assembly of components and joints that realizes some desired performance criteria. Such a probl…
Optimal Design of Continuum Robots with Reachability Constraints
Hyunmin Cheong, Mehran Ebrahimi, Timothy Duggan
While multi-joint continuum robots are highly dexterous and flexible, designing an optimal robot can be challenging due to its kinematics involving curvatures. Hence, the current w…
A hyperreduced reduced basis element method for reduced-order modeling of component-based nonlinear systems
Mehran Ebrahimi, Masayuki Yano
We introduce a hyperreduced reduced basis element method for model reduction of parameterized, component-based systems in continuum mechanics governed by nonlinear partial differen…
Design optimization of dynamic flexible multibody systems using the discrete adjoint variable method
Mehran Ebrahimi, Adrian Butscher, Hyunmin Cheong +1
The design space of dynamic multibody systems (MBSs), particularly those with flexible components, is considerably large. Consequently, having a means to efficiently explore this s…
A low order, torsion deformable spatial beam element based on the absolute nodal coordinate formulation and Bishop frame
Mehran Ebrahimi, Adrian Butscher, Hyunmin Cheong
Heretofore, the Serret-Frenet frame has been the ubiquitous choice for analyzing the elastic deformations of beam elements. It is well known that this frame is undefined at the inf…