Mechanics Research on the Vertical Bearing Characteristics of Suction Pile Cluster in Soft Ground

For a suction pile, drainage condition influences the magnitude of under-pressure ('suction'). As the growth of suction, the break-out resistance transforms from local shear failure, local tensile failure to general shear failure. This paper will discuss the failure mechanism of suction pile cluster under vertical load with different drainage conditions. The finite element method and software ABAQUS are employed to analysis these problems.

Download Full-text

Stress Analysis of a Tire Under Vertical Load by a Finite Element Method

Tire Science and Technology ◽

10.2346/1.2167231 ◽

1977 ◽

Vol 5 (2) ◽

pp. 102-118 ◽

Cited By ~ 28

Author(s):

H. Kaga ◽

K. Okamoto ◽

Y. Tozawa

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Computer Program ◽

Temperature Rise ◽

Strain Energy ◽

Internal Stresses ◽

Vertical Load ◽

The Finite Element Method ◽

Internal Temperature ◽

Element Method

Abstract An analysis by the finite element method and a related computer program is presented for an axisymmetric solid under asymmetric loads. Calculations are carried out on displacements and internal stresses and strains of a radial tire loaded on a road wheel of 600-mm diameter, a road wheel of 1707-mm diameter, and a flat plate. Agreement between calculated and experimental displacements and cord forces is quite satisfactory. The principal shear strain concentrates at the belt edge, and the strain energy increases with decreasing drum diameter. Tire temperature measurements show that the strain energy in the tire is closely related to the internal temperature rise.

Download Full-text

Advanced Design of Block Shear Failure

Metals ◽

10.3390/met11071088 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1088

Author(s):

Marta Kuříková ◽

David Sekal ◽

František Wald ◽

Nadine Maier

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Shear Failure ◽

Plate Thickness ◽

Design Procedure ◽

The Finite Element Method ◽

Initial Stiffness ◽

Block Shear ◽

Internal Forces ◽

Element Method

This paper presents the behaviour and design procedure of bolted connections which tend to be sensitive to block shear failure. The finite element method is employed to examine the block shear failure. The research-oriented finite element method (RFEM) model is validated with the results of experimental tests. The validated model is used to verify the component-based FEM (CBFEM) model, which combines the analysis of internal forces by the finite element method and design of plates, bolts and welds by the component method (CM). The CBFEM model is verified by an analytical solution based on existing formulas. The method is developed for the design of generally loaded complicated joints, where the distribution of internal forces is complex. The resistance of the steel plates is controlled by limiting the plastic strain of plates and the strength of connectors, e.g., welds, bolts and anchor bolts. The design of plates at a post-critical stage is available to allow local buckling of slender plates. The prediction of the initial stiffness and the deformation capacity is included natively. Finally, a sensitivity study is prepared. The studied parameters include gusset plate thickness and pitch distance.

Download Full-text

Study on Non-Linear Numerical Method of Composite Foundation with Rigid-Flexible Piles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.671-674.133 ◽

2013 ◽

Vol 671-674 ◽

pp. 133-136

Author(s):

Shao Chong Yang ◽

Jian Hui Zhang

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Numerical Method ◽

Analytical Model ◽

Composite Foundation ◽

Vertical Load ◽

The Finite Element Method ◽

Soil System ◽

Non Linear ◽

Pile Interaction

A non-linear numerical method of composite foundation with rigid-flexible piles in the stratified soil under the vertical load was established in this paper. The analytical model of the pile-soil-pile interaction was used to imitate the pile-soil system and the finite element method was applied to simulate the cushion (the cushion cap). The corresponding calculation program was programmed. Computation results show that the method is reasonable and feasible, and can be applied to the analysis of practical composite foundation.

Download Full-text

Gravitational stress field around a tunnel in soft ground

Canadian Geotechnical Journal ◽

10.1139/t70-005 ◽

1970 ◽

Vol 7 (1) ◽

pp. 54-61 ◽

Cited By ~ 8

Author(s):

B. Hoyaux ◽

B. Ladanyi

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Infinite Medium ◽

Soft Ground ◽

The Finite Element Method ◽

Short Term ◽

Displacement Fields ◽

Stress And Displacement Fields ◽

Gravitational Stress ◽

Material Behaviors

The finite element method has been used for determining the stress distribution and the displacements due to gravity around an unlined tunnel driven through a semi-infinite medium, characterized by three idealized material behaviors reflecting approximately a short term behavior of natural undisturbed insensitive and sensitive clays. The knowledge of stress and displacement fields around an unlined tunnel can be used for evaluating the need for supports according to the acceptability of expected deformations.

Download Full-text

Investigating Vertical Load Distribution and Shoring Systems of Reinforced Concrete Buildings during Construction

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.1369 ◽

2010 ◽

Vol 163-167 ◽

pp. 1369-1374

Author(s):

Shu Ping Cong ◽

Jin Sheng Han ◽

Shu Ting Liang

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Reinforced Concrete ◽

Approximate Method ◽

Load Distribution ◽

Vertical Load ◽

The Finite Element Method ◽

Reinforced Concrete Buildings ◽

Concrete Buildings ◽

Concrete Members

The loads of reinforced concrete buildings are bore by shores and early age concrete members during construction. In order to analysis the distribution of vertical load between concrete members and shores, the approximate method was developed based on the finite element method and simplified method. According to the process of construction, seven primary structures were brought forward in the approximate method. The coefficients of vertical load distribution between concrete members and shores are confirmed through the finite element method. The loads of concrete members and shores could be obtained conveniently through the distribution coefficients. Three shoring systems (2S, 2S1R and 3S) could be calculated by the approximate method, so the suitable shoring systems for reinforced concrete buildings would be confirmed.

Download Full-text

Optimal chest wall prosthesis: comparative study of mechanical and functional behaviour

European Journal of Cardio-Thoracic Surgery ◽

10.1093/ejcts/ezaa355 ◽

2020 ◽

Author(s):

Paolo Nicola Camillo Girotti ◽

Ingmar Königsrainer ◽

Ugo Pastorino ◽

Ambrogio Luigi Girotti ◽

Francesco Rosa

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Chest Wall ◽

Human Anatomy ◽

Prosthetic Material ◽

Vertical Load ◽

The Finite Element Method ◽

Prosthetic Reconstruction ◽

Prosthetic Materials ◽

Element Method

Abstract OBJECTIVES Chest wall resections are most commonly performed for tumours, infection, radiation necrosis and trauma. Defects in the anterior chest greater than 5 cm, posterior defects more than 10 cm or resection including more than 3 ribs, independently of the location, require skeletal prosthetic reconstruction. The aim of this paper was to evaluate the strength of prostheses that reproduced the normal human anatomy using different materials subjected to the most dangerous loading conditions. METHODS The biomechanical behaviours of different prosthetic materials under critical rib fracture conditions were analysed using the finite element method and then validated through mechanical testing of 3-dimensional polymethylmethacrylate ribs as a prosthesis reproducing the native anatomy of the human ribcage. RESULTS The prosthetic materials and the polymethylmethacrylate prosthesis were tested under 3 load conditions: sternal load (an anterior–posterior load applied at the third rib); lateral load (strength applied at the lateral arch of the fifth rib) and vertical load (vertical load applied at the first sternocostal junction) and showed the same results in terms of failures compared to the results from the finite element method model simulation (same location and number of fractures were detected). Although the displacement error between the finite element method and experimental test was up to 5% overall, no other microcracking was observed. CONCLUSIONS This experimental study demonstrated that all prosthetic materials currently available for human use show optimal mechanical behaviour in term of resistance and organ protection. Specifically, polymethylmethacrylate was a good candidate as a prosthetic material in term of lightness, resistance and prosthetic weight.

Download Full-text

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽

10.1039/c9nr06508c ◽

2019 ◽

Vol 11 (43) ◽

pp. 20868-20875 ◽

Cited By ~ 1

Author(s):

Junxiong Guo ◽

Yu Liu ◽

Yuan Lin ◽

Yu Tian ◽

Jinxing Zhang ◽

...

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Interfacial Effect ◽

Infrared Photodetector ◽

The Finite Element Method ◽

Ferroelectric Domains ◽

Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

Download Full-text