Engineering with Computers

This article presents MuMFiM, an open-source application for multiscale modeling of fibrous materials on massively parallel computers. MuMFiM uses two scales to represent fibrous materials such as biological network materials (extracellular matrix,...

Generating tangle-free high-quality hexahedral meshes is an ongoing challenge. Tangled meshes, i.e., meshes containing negative Jacobian elements, are unsuitable for finite element (FE) simulations as they lead to erroneous results. Consequently, ...

There are far too many quality and optimization metrics in the meshing literature than are needed. The situation with Target Matrix Optimization Paradigm (TMOP) is the same, because it is all too easy to invent new metrics. How does one go about ...

This paper proposes a general strain-gradient and shear-deformable isogeometric microshell formulation based on the complete Mindlin’s form II strain gradient theory (SGT) and Reissner–Mindlin shell model for the static and dynamic analyses of in-...

The concentration of the current contribution is on the geometrically nonlinear analysis of laminated composite shells employing the finite element method. For this purpose, the use is made of a higher-order shell model with extensible directors ...

In this study, we present a methodology for deriving an optimal performance design in a new domain using a designable generative adversarial network (DGAN) structure based on domain-adaptive designable data augmentation (DADDA). In a generative ...

Neoadjuvant chemotherapy (NAC) is a standard-of-care treatment for locally advanced triple negative breast cancer (TNBC) before surgery. The early assessment of TNBC response to NAC would enable an oncologist to adapt the therapeutic plan of a non-...${}_{}$

There is an increasing interest in creating high-resolution 3D subsurface geo-models using multisource retrieved data, i.e., borehole, geophysical techniques, geological maps, and rock properties, for emergency managements. However, dedicating ...

The 3D chiral-type auxetic metamaterials have attracted massive attention in both academia and engineering. However, the complex deformation mechanism makes this kind of metamaterial hard to be topologically devised, especially in the 3D scenario. ...

In Kriging model-based time-dependent reliability analysis algorithm, double-loop one (DLK) needs partial candidate sample pool (CSP) combination of random input and time variable, while single-loop one (SLK) needs complete CSP combination, thus ...

This paper deals with the study and application of a numerical integration scheme based on the Bézier curves to obtain stable and accurate solutions of the governing differential–algebraic equations (DAEs) of constrained multibody systems. For ...

In this paper, an effective and highly versatile locally-defined time-marching procedure is proposed for dynamic analysis. In this novel technique, the time integration parameters of the method are specified at an element level, adapting ...

With physics-informed neural networks (PINNs), inverse problems involving differential equations can be solved despite noise, sparsity, and varying levels of fidelity. The objective of PINNs is to minimize a loss function using all available ...${}_{\mathrm{}}$${}_{\mathrm{}}$${}_{\mathrm{}}$${}_{\mathrm{}}$${}_{\mathrm{}}$

Composite materials like syntactic foams have complex internal microstructures that manifest high-stress concentrations due to material discontinuities occurring from hollow regions and thin walls of hollow particles or microballoons embedded in a ...

Nonlinear vibrations of truncated viscoelastic conical shell (TVCS) structures are studied using an isogeometric formulation based on non-uniform rational B-spline (NURBS) basis functions. The governing equations of motion for the TVCS are ...${}^{\mathrm{}}$${}^{\mathrm{}}$

This study investigates the constitutive relationships for a modified bond-based peridynamic (MBB-PD) model to analyze bimaterial structures with a viscoelastic component subjected to mechanical and thermal loads. The hereditary integral ...

Most of the previous topology optimization methods for thermoelastic structures use steady-state heat transfer and static equations, which are not applicable to time-dependent loads. In this article, a generic topology optimization method ...

A novel peridynamic fatigue model is introduced that incorporates the R-ratio effects on fatigue crack growth using a two-parameter remaining-life formulation. The remaining-life formulation is expressed as a function of two independent ...

Exact boundary conditions (BCs) imposition technique is widely used in physics-informed neural networks (PINNs) for solving boundary value problems (BVPs). In this regard, the selection of trial function satisfying essential BCs becomes hard to ...

The application of physics-informed neural networks (PINNs) to address problems involving partial differential equations (PDEs) is increasing. However, PINNs still need lots of enhancement to become reliably robust, as they are prone to fail in ...

Topology and shape optimization (TSO) is a powerful technique for achieving high-stiffness configurations of stiffened curved shells. However, it presents a challenge to obtain stiffener layouts that satisfy manufacturing constraints using ...

Lattice materials and hollow structures possess excellent mechanical properties, which are beneficial to satisfy the lightweight demands of the products, especially for the large deformation situation. Therefore, a concurrent topology optimization ...

In this study, a novel meshless collocation method based on the Gaussian–cubic hybrid kernel function in conjunction with the ghost-points method and the general Newton–Raphson method is proposed for solving the four-order stream function ...

Extreme waves, also known as ‘rogue waves’, have posed considerable challenges to maritime traffic over some time. Efforts have been directed at investigating the mechanisms governing these extreme energy localizations in oceanic environments. ...

We describe the SOniCS (SOFA + FEniCS) plugin to help develop an intuitive understanding of complex biomechanics systems. This new approach allows the user to experiment with model choices easily and quickly without requiring in-depth expertise. ...

Spectral element methods (SEM), extensions of finite element methods (FEM), have emerged as significant techniques for solving partial differential equations in physics and engineering. SEM can potentially deliver superior accuracy due to the ...

Over the past few decades, various inverse modeling and data assimilation techniques have been proposed to integrate observed data into subsurface flow models for optimal parameter estimation. In practice, subsurface flow models are often ...

Today’s supercomputers power scientific calculations in very different areas, ranging from nanotechnology to climate studies and astronomy. Research groups in nascent areas of science and engineering develop their own scientific software, since it ...

The solutions tend to have large gradients, discontinuities, or sharp layers for convection-dominated convection–diffusion–reaction equations. Many studies have demonstrated the advantages of moving mesh and variational multiscale finite element ...

Interfaces in multiphase flows are affected by surface tension, and when temperature gradients occur in the flow domain, tangential surface tensions along the interface also arise. As the behaviour of fluids contacting on a solid surface is also ...