Stress Analysis for the Critical Metal Structure of Bridge Crane

The Effects of Oblique Running and Ideal Motion on Stress Analysis of Bridge Crane Wheels

Journal of Mechanical Design ◽

10.1115/1.2218886 ◽

2005 ◽

Vol 128 (6) ◽

pp. 1361-1365

Author(s):

Mine Demirsoy

Keyword(s):

Finite Element ◽

Stress Analysis ◽

Numerical Results ◽

Bridge Crane ◽

Finite Element Package ◽

Girder Bridge ◽

The Ideal

In this study, the effects of oblique running and ideal motion on the stresses of bridge crane wheels were examined. The stresses on the crane wheels were calculated using the rotation angles and the forces. The commercial finite element package I-DEAS was used for the solution of the problem. The technical values of two double girder bridge cranes with 32 and 50ton carrying capacities and 18m crane span were used. Finally, the stresses caused by the oblique running were compared with the ideal motion. The numerical results show that the stress values increase by the oblique running.

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Reliability Analysis-Based Numerical Calculation of Metal Structure of Bridge Crane

Mathematical Problems in Engineering ◽

10.1155/2013/260976 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 7

Author(s):

Wenjun Meng ◽

Zhengmao Yang ◽

Xiaolong Qi ◽

Jianghui Cai

Keyword(s):

Finite Element ◽

Orthogonal Design ◽

Random Perturbation ◽

Mapping Function ◽

Random Variable ◽

Metal Structure ◽

Extreme Condition ◽

Bridge Crane ◽

Analysis And Design ◽

Dangerous Point

The study introduced a finite element model of DQ75t-28m bridge crane metal structure and made finite element static analysis to obtain the stress response of the dangerous point of metal structure in the most extreme condition. The simulated samples of the random variable and the stress of the dangerous point were successfully obtained through the orthogonal design. Then, we utilized BP neural network nonlinear mapping function trains to get the explicit expression of stress in response to the random variable. Combined with random perturbation theory and first-order second-moment (FOSM) method, the study analyzed the reliability and its sensitivity of metal structure. In conclusion, we established a novel method for accurately quantitative analysis and design of bridge crane metal structure.

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Research on Multidisciplinary Optimization Design of Bridge Crane

Mathematical Problems in Engineering ◽

10.1155/2013/763545 ◽

2013 ◽

Vol 2013 ◽

pp. 1-10 ◽

Cited By ~ 6

Author(s):

Tong Yifei ◽

Ye Wei ◽

Yang Zhen ◽

Li Dongbo ◽

Li Xiangdong

Keyword(s):

Mathematical Model ◽

Energy Saving ◽

Optimization Design ◽

Metal Structure ◽

Multidisciplinary Optimization ◽

System Level ◽

Bridge Crane ◽

Element Analysis ◽

Structure Level ◽

Transmission Design

Bridge crane is one of the most widely used cranes in our country, which is indispensable equipment for material conveying in the modern production. In this paper, the framework of multidisciplinary optimization for bridge crane is proposed. The presented research on crane multidisciplinary design technology for energy saving includes three levels, respectively: metal structures level, transmission design level, and electrical system design level. The shape optimal mathematical model of the crane is established for shape optimization design of metal structure level as well as size optimal mathematical model and topology optimal mathematical model of crane for topology optimization design of metal structure level is established. Finally, system-level multidisciplinary energy-saving optimization design of bridge crane is further carried out with energy-saving transmission design results feedback to energy-saving optimization design of metal structure. The optimization results show that structural optimization design can reduce total mass of crane greatly by using the finite element analysis and multidisciplinary optimization technology premised on the design requirements of cranes such as stiffness and strength; thus, energy-saving design can be achieved.

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A convex model approach for structure non-probabilistic reliability analysis

Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability ◽

10.1177/1748006x17710817 ◽

2017 ◽

Vol 231 (5) ◽

pp. 508-515 ◽

Cited By ~ 6

Author(s):

Zhengmao Yang ◽

Yanjuan Zhang ◽

Wenjun Meng ◽

Jianghui Cai

Keyword(s):

Stress Response ◽

Regression Function ◽

Metal Structure ◽

Support Vector ◽

Bridge Crane ◽

The Finite Element Method ◽

Convex Model ◽

Novel Approach ◽

Vector Machines ◽

Dangerous Point

In this article, a novel approach, that is, convex model method of set theory, is proposed to investigate the non-probabilistic reliability of bridge crane. Considering the metal structure system of the bridge crane, the finite element method is applied to obtain the stress response of the structure dangerous point. Then, the sample of stress response of the structure danger point and uncertain parameters are obtained. Finally, based on support vector machines, the structure implicit regression function of the system is replaced by explicit expression that calculates the non-probabilistic reliability of the structure. Results show that this approach is useful and efficient to solve the problem of non-probabilistic reliability in the metal structure.

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ANALISA KEGAGALAN KOMPONEN DRIVE PINION GEAR PADA SWING MOTOR EXCAVATOR CATERPILLAR 349D

JTAM ROTARY ◽

10.20527/jtam_rotary.v2i1.2006 ◽

2020 ◽

Vol 2 (1) ◽

pp. 79

Author(s):

Andi Fatkurocman ◽

Ach. Kusairi Samlawi

Keyword(s):

Stress Analysis ◽

Motor Unit ◽

Planetary Gear ◽

Metal Structure ◽

Visual Observation ◽

Pinion Gear ◽

Student Version

Penelitian ini bertujuan untuk mengetahui alasan fraktur yang terjadi pada drive pinion gear unit motor swing Excavator Caterpillar 349 d. Dalam penelitian ini dilakukan beberapa tahapan yaitu pengamatan visual dan pengamatan makro, pengujian komposisi struktur logam, dan pemodelan load and latch menggunakan Autodesk Inventor 2014 sebelum mendapatkan hasil akhir. Hasil yang diperoleh dari penelitian ini adalah bahwa ada kurangnya presisi antara pinion drive dan planetary gear karena pin planet yang tidak dapat berfungsi sebagai pemegang planetary gear sehingga rotasi planet rentan terhadap tabrakan sebagai pemicu yang mengakibatkan cacat. Pada proses analisis tegangan menggunakan software autodesk inventor 2014 versi mahasiswa, hasil analisis nilai von misses adalah 9,798 Mpa jauh lebih kecil dari batas elastisitas material 790 MPa sehingga faktor pembebanan tidak menyebabkan sebuah kesalahan. This research is purpose to knowing the reason of the fracture that happen in drive pinion gear of the swing motor unit Excavator Caterpillar 349 d. In this research is doing by several stage it is visual observation and macro observation, testing of metal structure composition, and load and latch modeling using Autodesk Inventor 2014 before getting the final result. The results obtained from this study are that there is a lack of precision between drive pinion gear and planetary gear due to planetary pins that cannot function as planetary gear holders so that planetary rotations are prone to hilarious triggering collisions resulting in defects. In the process of stress analysis using the student version of autodesk inventor 2014 software, the results of the analysis of the value of von misses is 9.798 Mpa are much smaller than the limit of material elasticity of 790 MPa so that the loading factor does not cause a fault.

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DYNAMIC ANALYSIS PECULIARITIES OF SUSPENSION TRUCK TRAVEL IN BRIDGE CRANE WITH LINEAR DRIVE

Bulletin of Bryansk state technical university ◽

10.12737/22050 ◽

2016 ◽

Vol 2016 (3) ◽

pp. 115-122

Author(s):

Илья Денисов ◽

Ilya Denisov ◽

Кирилл Гончаров ◽

Kirill Goncharov ◽

Евгений Ильин ◽

...

Keyword(s):

Dynamic Analysis ◽

Dynamic Models ◽

Metal Structure ◽

Interaction Force ◽

Bridge Crane ◽

Electric Motors ◽

Friction Forces ◽

Drive Control ◽

Operating Rate ◽

High Dynamic

The paper reports the results of a dynamic analysis of suspension truck travel in a bridge crane with a linear drive. As compared with the existing designs this drive possesses a number of advantages and distinguishing capacities which should be taken into account at the formation of dynamic models. So, the interaction force between the elements of an electric motor affects the resistance value to a truck travel of friction forces. A nominal operating rate of linear electric motors exceeds 1 m/sec. The operating rates of the travel of most loadlifting machines and their separate elements are within the bounds of 0.1 – 1 m/sec. It is evident that even to maintain the same rate of travel the introduction of a control system is necessary. On the other hand, linear electric motors with the control systems possess high dynamic characteristics and may be used to reduce load oscillations on a flexible suspension which is particularly significant for technological cranes. A dynamic analysis is carried out for a singlemass and doublemass models. The results of computations confirmed a necessity for the drive control to obtain a working speed of movement and also to reduce load oscillations and dynamic loads upon mechanisms and a metal structure of a loadlifting machine. The analysis has also shown that a singlemass model does not give a complete comprehension of changes in a speed of a mechanism at acceleration and it should not be used at the design computations of movement mechanisms of this type.

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Finite element analysis of Bridge Crane Metal Structure Based on ABAQUS

MATEC Web of Conferences ◽

10.1051/matecconf/201819801004 ◽

2018 ◽

Vol 198 ◽

pp. 01004

Author(s):

Zhong Meng ◽

Tong Yifei ◽

LI Xiangdong

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Metal Structure ◽

Design Parameters ◽

Bridge Crane ◽

The Finite Element Method ◽

Three Dimensional Model ◽

Element Analysis ◽

Operation Conditions ◽

Element Method

Taking the QD-type (50/10t-31.5) bridge crane as the research object and the finite element method as theoretical basis, the metal structure using ABAQUS software is analyzed. Firstly, the three-dimensional model of the metal structure is established according to the design parameters. Second, the bridge crane under three typical operation conditions is analyzed and the stress and displacement analysis results are presented. And, the strength and stiffness of the crane are verified based on the analysis results. Moreover, the maximum stress and displacement under dangerous conditions of the crane are calculated by theoretical calculation. By comparing the results of the theoretical method and the finite element method. The research can favor to increase the design efficiency.

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