The implementation of high-order (spectral) approximations associated with FEM is an approach to overcome the difficulties encountered in the numerical analysis of complex problems. This paper proposes the use of the spectral finite element method, originally developed for computational fluid dynamics problems, to achieve improved solutions for these types of problems. Here, the interpolation n...

! The aortic root is the group of structures that make up the aortic valve. Besides the aortic leaflets, the aortic root complex includes the aortic annulus, the Valsalva sinuses, and the sinotubolar junction [1]. This group of structures has the functional role of assisting valve opening and closure by creating and maintaining the optimal pressure difference between the aorta and the left vent...

Transfer matrices are used widely for the dynamic analysis of engineering structures, increasingly so for static analysis, and are particularly useful in the treatment of repetitive structures for which, in general, the behaviour of a complete structure can be determined through the analysis of a single repeating cell, together with boundary conditions if the structure is not of infinite extent...

The paper addresses a problem of the manipulator stiffness modeling, which is extremely important for the precise manufacturing of contemporary aeronautic materials where the machining force causes significant compliance errors in the robot end-effector position. The main contributions are in the area of the elastostatic parameters identification. Particular attention is paid to the practical i...

We proposed the boundary-integral type neural networks (BINN) for boundary value problems in computational mechanics. The integral equations are employed to transfer all unknowns boundary, then approximated using and solved through a training process. loss function is chosen as residuals of equations. Regularization techniques adopted efficiently evaluate weakly singular Cauchy principal integr...