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finiteelementanalysis, etc ; aircraft; certification; computer software; fabrics; geometry; models; textile fibers; Show all 8 Subjects
Abstract:
... Finite element modeling is an excellent technique for simulating a stitched woven composite to determine its mechanical properties and the analysis of the damage progress. In this technique, actual textile tow geometry measurements based on textile fiber photomicrographs are used to make the internal geometry of the fabric. In this paper, a unit-cell of the stitched composite was generated in micr ...
... Tension-Compression and Compression-Compression fatigue tests were carried out on glass/epoxy cross-ply laminates, with different values of the minimum to maximum load ratio R (−1, −3, −5, −7, −10 and 20). During the tests, the damage evolution in the 90° ply was monitored at the macro-and micro-scales. Three damage scenarios were observed, depending on the load ratio: i) initiation and propagatio ...
finiteelementanalysis, etc ; absorption; energy; models; Show all 4 Subjects
Abstract:
... Composite tubes have been widely used as the energy absorption device. In order to realize the fine crashworthiness design, it is necessary to perform multiple iteration calculations by the finite element analysis. However, the high-fidelity calculation of the composite damage model is time-consuming (a model with about 320,000 elements requires 32 to 40 h of computation). Therefore, a novel equiv ...
finiteelementanalysis, etc ; equations; geophysics; water; Show all 4 Subjects
Abstract:
... The new Chinese national standard, Standard for the seismic design of hydraulic structures (GB51247-2018), has been published. Compared with the Specifications for the seismic design of hydraulic structures (SL203-1997), the standard design response spectrum curve was revised in the new national standard. In order to compare the seismic responses of an arch dam under excitation from the design res ...
... Interference fit micropinning is a novel joining method that involves inserting thin pins with a size interference into an array of ultra-thin holes to create high strength structural joints. An experimental and finite element (FE) modelling study demonstrates the high structural properties of composite-to-metal joints using interference fit micropins. The joint studied consisted of plates of carb ...
finiteelementanalysis, etc ; deformation; heat transfer; Show all 3 Subjects
Abstract:
... A new perspective presents how the interaction between the material stiffness of both matrix and fibre took place to form the laminate response. Thin square simply supported balanced laminated composite plate of different ply arrangements subjected to abrupt heat flux is utilized in this investigation. The effect of ply arrangement on the elapse time for vibrations to vanish and the maximum respon ...
finiteelementanalysis, etc ; models; permeability; skeleton; water; Show all 5 Subjects
Abstract:
... We present a hybrid-mixed finite element method for a novel hybrid-dimensional model of single-phase Darcy flow in a fractured porous media. In this model, the fracture is treated as a (d−1)-dimensional interface within the d-dimensional fractured porous domain, for d=2,3. Two classes of fracture are distinguished based on the permeability magnitude ratio between the fracture and its surrounding m ...
finiteelementanalysis, etc ; analytical chemistry; geometry; nanospheres; Show all 4 Subjects
Abstract:
... Size-based separation of particles in microfluidic devices can be achieved using arrays of micro- or nanoscale posts using a technique known as deterministic lateral displacement (DLD). To date, DLD arrays have been limited to parallelogram or rotated-square arrangements of posts, with various post shapes having been explored in these two principal arrangements. This work examines a new DLD geomet ...
finiteelementanalysis, etc ; anisotropy; carbon fibers; equations; Show all 4 Subjects
Abstract:
... This article discusses the main contributing factors for the resistance change of strain sensors with large electrical anisotropy. Typical examples for such a sensor are self sensing applications for carbon fiber reinforced plastics, where the load bearing material itself is used for strain sensing purposes. In many of these applications, electrodes are mounted to the parts surface to act as elect ...
finiteelementanalysis, etc ; Japan; equations; glulam; wood; Show all 5 Subjects
Abstract:
... When a glued laminated timber (GLT) beam with a round hole is subjected to a shear force and bending moment, the hole will crack and fail due to a large tensile stress perpendicular to the grain and shear stresses. If the stresses acting on the hole are known, it is possible to estimate the fracture load. However, it is necessary to obtain the stresses acting on the hole by finite element analysis ...
finiteelementanalysis, etc ; compression strength; deformation; fabrics; research; Show all 5 Subjects
Abstract:
... Slender fibrous assembled structures can easily buckle under longitudinal compressive load. The limitation in characterizing the longitudinal compression behavior poses a significant challenge to the mechanics optimization of such structures. To address this challenge, we use one-dimensional yarns as a model system, and the yarns are deformed in bending to form a strain gradient, from tension to c ...
finiteelementanalysis, etc ; hydrodynamics; models; sediments; tsunamis; uncertainty; Show all 6 Subjects
Abstract:
... The development of reliable, sophisticated hydro-morphodynamic models is essential for protecting the coastal environment against hazards such as flooding and erosion. There exists a high degree of uncertainty associated with the application of these models, in part due to incomplete knowledge of various physical, empirical and numerical closure related parameters in both the hydrodynamic and morp ...
finiteelementanalysis, etc ; gravity; magnetic fields; magnetic separation; Show all 4 Subjects
Abstract:
... Magnetic agglomeration plays a vital role in enhancing the separation of fine magnetic mineral particles. However, the forces causing magnetic agglomeration in wet low-intensity magnetic separators (LIMS) are poorly understood; this calls for improved understanding of various forces (including magnetic force (Fₘ), magnetic agglomeration force (Fₘₘ), gravity (G)) acting on magnetic particles in the ...
finiteelementanalysis, etc ; coal; energy; lithium batteries; thermodynamics; Show all 5 Subjects
Abstract:
... The catastrophic consequences of cascading thermal runaway events on lithium-ion battery (LIB) packs have been well recognised and studied. In underground coal mining occupations, the design enclosure for LIB packs is generally constructed to be explosion-proof (IEC60079.1 Standard). This, however, in contrast to various investigations that have been performed and conducted to illustrate the inapp ...
finiteelementanalysis, etc ; mathematical models; paper; pollution; research; Show all 5 Subjects
Abstract:
... The machining of Nomex honeycomb structures represents a technical and scientific barrier for aeronautical applications. The difficulties encountered during the machining of this type of material are linked to the low density of Nomex paper, and to the low thickness of the walls forming the honeycomb cells of this type of structure. In this work, a finite element calculation code “ABAQUS`- EXPLICI ...
finiteelementanalysis, etc ; crystallization; microstructure; models; synergism; thermal stress; Show all 6 Subjects
Abstract:
... Laser powder bed fusion (L-PBF), categorized as additive manufacturing technique, has a capability to fabricate NiTi (Nitinol) shape memory alloys with tailorable functional properties and complex geometries. An important processing parameter, hatch distance (h), is often related to macroscale structural defects; however, its role on controlling the microstructure and functional properties is usua ...
finiteelementanalysis, etc ; computer simulation; polypropylenes; silos; simulation models; Show all 5 Subjects
Abstract:
... This paper investigates the electrostatic field distribution inside a grounded metal silo during the loading of large amounts of powder (up to 1000 kg) using a simulation and accurate experimental parameters. The commercial COMSOL Multiphysics 5.4 AC/DC module, which uses the finite element method, was used in this study. Using the simulation, 1000 kg of 3 mm polypropylene powder was loaded into a ...
finiteelementanalysis, etc ; anisotropy; isotropy; mathematical models; stress response; Show all 5 Subjects
Abstract:
... We present the numerical simulation data obtained by implementing a user material subroutine (UMAT) in the finite element commercial package ABAQUS. The simulation data correspond to the stress response of two transversely isotropic hyperelastic models on homogeneous and non-homogeneous deformations. First model is proposed in the co-submitted article [1] and depends on both anisotropic invariants ...
finiteelementanalysis, etc ; bitumen; models; pavements; prediction; temperature; viscoelasticity; Show all 7 Subjects
Abstract:
... Understanding the performance of rejuvenated asphalt mixtures is critical for cleaner pavement design and construction, as the use of rejuvenators lead to environmental and economic benefits with the ability to increase recycling but promote rutting and moisture susceptibility at a high recycled binder ratio. Existing models have not systematically evaluated rejuvenated asphalt mixtures in terms o ...
finiteelementanalysis, etc ; delamination; energy; impact load; models; plastic deformation; Show all 6 Subjects
Abstract:
... A finite element (FE) model to accurately compute the low energy impact response and impact damage to fibre metal laminates (FMLs) under tension preloading is described. The FE model can predict the initiation and progression of impact damage that includes metal plastic deformation, delamination damage, and debonding along the metal-composite interfaces. The accuracy of the FE model is evaluated u ...