Friction

In this paper, we study analysis of perturbed frictional contact problems. Its shows how homotopy perturbation techniques and projection can be integrated in control-based approach to reanalyze the perturbed frictional contact problems.

14p vibecca 01-10-2024 1 0   Download

This study focuses on the finite element approach to compute by simulating the temperature distributions of a steady-state rolling tire. For simplicity, the tire is assumed to be composed of rubber, body-ply, wire, and rim only.

11p vibecca 01-10-2024 0 0   Download

This article studied precast concrete revetments with ALB composite material reinforcement and conducted experimental research to determine the shear resistance characteristics of coral sand and the friction characteristics of concrete materials with coral sand.

13p viyoko 01-10-2024 4 1   Download

In the scope of the paper studying the pile group effect in case of multilayered foundation, especially the effect of porous, medium-tight sand layers in the foundation on the load bearing capacity and subsidence of friction piles, the following issues are clarified: (i) coefficient of pile group in multi-layered foundation, with sand and clayey soil layer; (ii) distribution of forces along the pile shaft; (iii) effect of pile group on settlement of the pile group.

8p vifilm 24-09-2024 4 1   Download

This paper develops a constant friction coefficient model that best represents a velocity-dependent friction model for predicting structural response of buildings isolated with concave friction bearings. To achieve this goal, the effect of friction model on structural response of three hypothetical isolated buildings with different number of stories subjected to different earthquake scenarios was numerically investigated.

15p vifilm 24-09-2024 3 1   Download

In this paper, a computational approach using a combination of the upper bound theorem and the bubbleenhanced quadrilateral finite element (FEM-Qi6) is proposed to evaluate bearing capacity factors of strip footing in cohesive-frictional soil. The new element is built based on the quadrilateral element (Q4) by adding a pair of internal nodes to solve the volumetric locking phenomenon.

13p vifilm 24-09-2024 2 1   Download

Jacking force is the most crucial factor in pipe jacking engineering. The calculation of jacking force directly affects to design of back wall pipe strength and intermediate jacking station. This paper introduces and compares some agreeable methods which are being used in the world for estimating the required jacking force.

7p viyoko 24-09-2024 2 1   Download

This paper presents a stable node-based smoothed finite element method (SNS-FEM) based on the upper theorem of limit analysis for stability analysis of a square tunnel in cohesive-frictional soils subjected to surcharge loading.

17p vifaye 20-09-2024 1 1   Download

We numerically study the effects of the size polydispersity and the friction coefficient on the compressive strength of wet granules under a diametrical compression test by using discrete element simulations. The numerical method is coupled with the capillary cohesion law which is enhanced by the cohesive forces between grains in the pendular regime.

9p vifaye 20-09-2024 1 1   Download

In this study, construction sequence and prediction of axial bearing capacity of M-pile on cohesive soil were introduced. M-pile analysis used with outer diameter of 318.5 mm and thickness of 12.7 mm. The analysis results show that the ultimate bearing capacity prediction of M-pilein soft clay soil considerably increase compared with bored and cast-in-place piles with the same diameter and depth thanks to multiple blades welded along the pile shaft.

8p vifaye 20-09-2024 1 1   Download

This paper presents the upper bound limit analysis of a slope in cohesive-frictional soils using the node-based smoothed finite element method (NS-FEM). The soil slope was discretized as triangular elements and modeled as Mohr-Coulomb material with the associated flow rule.

14p vifaye 20-09-2024 4 1   Download

This paper investigates the influence of intergranular friction and grain size distributions on the initial void ratio of a granular sample subjected to isotropic compression loading. In the field of geomechanics, besides the loading path and evolution of microscopic properties, the initial void ratio is a crucial and key factor that governs the mechanical behavior of geomaterials.

10p vifaye 20-09-2024 2 1   Download

Sufficient heat dissipation is crucial to the effective operation of friction based braking systems. Such cooling is generally provided by ensuring a sufficient supply of cooling air to the heated components, hence the aerodynamics in the region of the brake components is extremely important. The objective of the research was to develop an understanding of how aerodynamics could be used to improve the cooling of automotive disc brakes.

137p runthenight07 01-03-2023 5 2   Download

Bài viết Ảnh hưởng thành phần đứng của những trận động đất mạnh đến phản ứng của kết cấu cách chấn bằng gối TFP phân tích và đánh giá sai số khi bỏ qua thành phần đứng của những trận động đất mạnh.

4p vijaguar 16-11-2022 10 2   Download

In this study, numerical simulations are conducted to mimic the instant and delayed seismic triggering observed after this event and evaluate resultant seismic cycle perturbations at adjacent faults and near İzmir, where amplified ground motions caused heavy damage. For this purpose, Coulomb static stress changes and seismic waveforms recorded by strong-motion stations are combined as static and dynamic triggers on a rate-and-state friction dependent quasi-dynamic spring slider model with shear-normal stress coupling.

12p tanmocphong 29-01-2022 15 1   Download

Scope of thesis: Fabrication and characteristics of single-layer nitride hard coating with multi-components (TiAlXN (X: Si, B, V)) and multi-layer nitride hard coating with multi-components TiAlXN/CrN (X: Si, B) with high hardness and low friction coefficient; to determine the influence of main parameters on the properties of coatings.

25p beloveinhouse01 15-08-2021 14 2   Download

Friction stir welding (Fsw) uses anon consumable tool to generate friction heat in the abutting surface, the welding parameter such as rotational speed, welding speed, tool tilt angle and tool pin profile play a major role to produce best quality joint.

12p lucastanguyen 01-06-2020 16 2   Download

The present work showed that the highest thermal performance factor under the same pumping power obtained from the experiments, is about 2.26 times more than that of plain duct.

12p lucastanguyen 01-06-2020 16 2   Download

This study applied diesel oil, and oil from two non-edible plant seeds which are Hura crepitans and Calophyllum inophyllum. These non-edible oils were extracted from their seeds using the soxhlet extractor and used in the oil-in-water emulsion mud.

16p lucastanguyen 01-06-2020 12 1   Download

The research mainly focused on optimizing the multi responses i.e. tensile strength, impact Strength and elongation while conducting the experiments on Friction Stir Welding process.

12p lucastanguyen 01-06-2020 9 1   Download