scholarly journals KEKUATAN DAN UMUR FATIK STRUKTUR PENOMPANG JAW CRUSHER DENGAN METODE ELEMEN HINGGA

2019 ◽  
Vol 5 (1) ◽  
pp. 1-5
Author(s):  
Nurhayati ◽  
T R Wijaya
Keyword(s):  
Finite Element Method ◽  
Working Life ◽  
Dynamic Loads ◽  
Cyclic Loads ◽  
Fatigue Load ◽  
Accurate Analysis ◽  
Jaw Crusher ◽  
Long Period ◽  
Operation Process ◽  
It Structure

The structure would be work well accordance to its capacity and it has the static loadings that were under limit the yield strength of the material, can be subjected to failure during operations, and this is because the structure receives additional dynamic loads that occur repeatedly within a long period of time as known as cyclic loads or fatigue loads. The purpose of the fatigue analysis is to find out the working life of structure so, the structure can be planned to repair and strengthen without disturbing the operation process. In real operations, the structure support of jaw crusher receives fatigue load from the equipment which standing on it. Structure alaysed by used finite element method with the aim to get more accurate analysis results. The type of analysis used is constants amplitude events. Based on the analysis results obtained the life of the jaw crusher is for 67000 cycles or 8 months 28.

scholarly journals Stress and strain analysis from dynamic loads of mechanical hand using finite element method

2018 ◽  
Vol 352 ◽  
pp. 012017 ◽  
Author(s):  
Iskandar Hasanuddin ◽  
Husaini ◽  
M. Syahril Anwar ◽  
B.Z. Sandy Yudha ◽  
Hasan Akhyar
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain Analysis ◽  
Dynamic Loads ◽  
Stress And Strain ◽  
Mechanical Hand ◽  
Element Method

scholarly journals Research of the strength of the bearing structure of the flat wagon body from round pipes during transportation on the railway ferry

2018 ◽  
Vol 235 ◽  
pp. 00003 ◽  
Author(s):  
Oleksij Fomin ◽  
Juraj Gerlici ◽  
Alyona Lovskaya ◽  
Kateryna Kravchenko ◽  
Pavlo Prokopenko ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Strength ◽  
Dynamic Loading ◽  
Cyclic Loads ◽  
The Finite Element Method ◽  
Bearing Structure ◽  
Element Method

The dynamic loading of the bearing structure of the flat wagon from round pipes was investigated during transportation on the railway ferry. The main types of movements of the railway ferry with wagons located on its decks are taken into account. The research has been carried out on the strength of the bearing structure of the flat wagon by the finite element method. The coefficient of the reserve for the fatigue strength of the bearing structure is calculated, taking into account the action of cyclic loads in the conditions of sea disturbance.

Research on Load Bearing Behavior of Ship Stiffened Plates under Cyclic Loads

2014 ◽  
Vol 904 ◽  
pp. 446-449
Author(s):  
Hu Wei Cui ◽  
Ping Yang ◽  
Can Shen ◽  
Liang Zhou
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ultimate Strength ◽  
Nonlinear Finite Element ◽  
Stiffened Plates ◽  
Cyclic Loads ◽  
Nonlinear Finite Element Method ◽  
Load Bearing ◽  
Different Dimensions ◽  
Bearing Behavior

This paper adopts nonlinear finite element method to study the load bearing behavior of ship stiffened plates with different dimensions. The research focuses on the compressive ultimate strength, axial rigidity, and residual plastic deflection of the stiffened plates under cyclic compressive and tensile loads. The results indicate that the compressive ultimate strength and axial rigidity of stiffened plates decrease with the incremental cyclic loads significantly, meanwhile, the residual plastic deflection increases with the cyclic loads.

Hamiltonian Nodal Position Finite Element Method for Cable Dynamics

2017 ◽  
Vol 09 (08) ◽  
pp. 1750109 ◽  
Author(s):  
Huaiping Ding ◽  
Zheng H. Zhu ◽  
Xiaochun Yin ◽  
Lin Zhang ◽  
Gangqiang Li ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rigid Body ◽  
Rigid Body Motion ◽  
Body Motion ◽  
Frequency Mode ◽  
Integration Scheme ◽  
Long Period ◽  
Nodal Position ◽  
Element Method

This paper developed a new Hamiltonian nodal position finite element method (FEM) to treat the nonlinear dynamics of cable system in which the large rigid-body motion is coupled with small elastic cable elongation. The FEM is derived from the Hamiltonian theory using canonical coordinates. The resulting Hamiltonian finite element model of cable contains low frequency mode of rigid-body motion and high frequency mode of axial elastic deformation, which is prone to numerical instability due to error accumulation over a very long period. A second-order explicit Symplectic integration scheme is used naturally to enforce the conservation of energy and momentum of the Hamiltonian finite element system. Numerical analyses are conducted and compared with theoretical and experimental results as well as the commercial software LS-DYNA. The comparisons demonstrate that the new Hamiltonian nodal position FEM is numerically efficient, stable and robust for simulation of long-period motion of cable systems.

scholarly journals Stress and Deformation Analysis of Joint Plate Depending on Truss Joint Design of Carrying Structure

TEM Journal ◽  
2021 ◽  
pp. 892-899
Author(s):  
Elizabeta Hristovska ◽  
Sevde Stavreva
Keyword(s):  
Finite Element Method ◽  
Software Package ◽  
Dynamic Loads ◽  
Local Analysis ◽  
Deformation Analysis ◽  
Load Carrying ◽  
Static And Dynamic Loads ◽  
The Subject ◽  
Stress And Deformation ◽  
Load Conditions

This article presents the stress and deformation shape of joint plate in two commonly used constructive designs of truss joints of a rotating excavator’s load-carrying structure. A local analysis of stresses and deformations of the joint plate have been conducted taking into consideration the most loaded truss joint of the working wheel’s load-carrying structure on specific rotating excavator, having a riveted design, as well as the theoretically determined forces affecting the joining trusses of the truss joint. These activities are performed employing FEM (Finite Element Method) modelling of the truss joint and using a software package for this purpose, in view of defined characteristic static and dynamic loads. Nowadays, the load-carrying structures are more often made by welding, so it is in our interest as it would affect the stress and deformation shape of the subject truss joint in welded design, bearing the same load conditions.

scholarly journals Simulation of Loads on the Carrying Structure of an Articulated Flat Car in Combined Transportation

2018 ◽  
Vol 7 (4.3) ◽  
pp. 140 ◽  
Author(s):  
Alyona Lovska ◽  
. .
Keyword(s):  
Mathematical Modeling ◽  
Finite Element Method ◽  
Structural Strength ◽  
Construction Material ◽  
Dynamic Loads ◽  
Capacity Analysis ◽  
The Finite Element Method ◽  
Solid Works ◽  
Loading Modes ◽  
Strength Modeling

The article presents the findings of the research into loading on the carrying structure of an articulated flat car under combined transportation. The refined data of dynamic loads on the carrying structure of a flat car under train ferry transportation, as well as the main loading modes in rail track operation were determined by mathematical modeling. The adequacy of the models developed was checked with an F-test. The results of the calculation conducted made it possible to conclude that the hypothesis on adequacy of the models is not rejected. The peculiarities of the structural strength modeling for a flat car within operational loading diagrams are given. The graphics works were conducted in Solid Works. The capacity analysis was conducted by the finite element method in CosmosWorks. The 09G2S steel was used as a construction material. It is determined that the maximum equivalent loads in the flat car support structure do not exceed the admissible loads. Results of the research can be used in designing coupled flat cars to provide their capacity at mixed transportation. 

scholarly journals Numerical simulations for the dynamics of flexural shells

2020 ◽  
Vol 25 (4) ◽  
pp. 887-912 ◽  
Author(s):  
Xiaoqin Shen ◽  
Luisa Piersanti ◽  
Paolo Piersanti
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Initial Conditions ◽  
Original Model ◽  
Point Of View ◽  
Dynamic Loads ◽  
Computational Point ◽  
Variational Equations ◽  
Numerical Tests ◽  
Membrane Shell

In this paper, we study a model describing the displacement of a linearly elastic flexural shell subjected to given dynamic loads from the computational point of view. The model under consideration takes the form of a set of hyperbolic variational equations posed over the space of admissible linearised inextensional displacements, and a set of initial conditions. Since the original model is not suitable for the implementation of a finite element method, we conduct the experiments on the corresponding penalised model. It was recently shown that the solution to such a penalised model is a good approximation of the solution to the original model. Numerical tests are therefore conducted on the the penalised model; the approximation of the solution to the penalised model is obtained via Newmark’s scheme, which is then implemented and tested for shells having the following middle surfaces: a portion of a cylinder and a portion of a cone. For the sake of completeness, we also present the results of the numerical tests related to a model describing the displacement of a linearly elastic elliptic membrane shell under the action of given dynamic loads.

Behaviour of Shearwalls with Slabs and Openings

2012 ◽  
Vol 602-604 ◽  
pp. 1566-1569
Author(s):  
Yun Cheul Choi ◽  
Hyun Ki Choi ◽  
Chang Sik Choi
Keyword(s):  
Shear Walls ◽  
Seismic Loading ◽  
Critical Section ◽  
Economic Advantage ◽  
Cyclic Loads ◽  
Test Results ◽  
Lateral Loads ◽  
Accurate Analysis ◽  
High Rise ◽  
Apartment Buildings

Generally because of the economic advantage and stable behavior in seismic loading, shearwalls combined with coupling slabs are widely used in high-rise apartment buildings. When analyzing such structures for lateral loads, however, the question of the actual stiffness and strength of the coupling slabs arises. For more accurate analysis approach, an experimental investigation was conducted with half-scale representations of the reinforced concrete shearwalls with the opening and coupled with slabs were subjected to cyclic loads. The test results of opening installed specimen, severe decrease of strength was observed. The decrease of strength of the shear walls by installation of openings shows a great deal of difference compared to previous researches. This is because flexural capacity of the slabs is working as coupling elements for the shear walls. The critical section of coupling slabs that works as coupling elements for shear walls was a little different from the results of previous researches.

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