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Powder Forging of a Motorcycle connecting rod

Journal of Materials Science & Technology 2002年第6期18卷 544-548页

作者： Guangchun WANG and Guoqun ZHAOMold & Die Engineering Technology Research Center, Shandong University (Southern campus), Jinan 250061, China Die Eng. Technol. Res. Cent. Shandong Univ. Ji'nan 250061 China

A motorcycle connecting rod is one of the major moving parts affecting the engine performance. The traditional manufacturing process results in material waste and excessive machining. A new method of hot forging P/M has been proposed and studied experimentally. In order to achieve uniform density, the punch was divided into three parts to consolidate the loose powder. The multistage movement of the three parts of the punch, called synchronous compaction, results in the desired uniform density. Powder flow during consolidation was illustrated and the density distribution of the compacts was measured. A set of forging dies with flash was used to produce densification and deformation of the sintered compact. Then a set of flashless forging dies was designed to obtain the desired shape and dimensions of the connecting rod. The effects of forging temperature and initial compact density on densification were evaluated through hot forging experiments. Based on properties achieved, Fe-C-Cu-Mo was selected as the

关键词： Powder metallurgy connecting rod Powder forging

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Microstructures and mechanical properties of semi-solid squeeze casting ZL104 connecting rod

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Transactions of Nonferrous Metals Society of China 2018年第2期28卷 235-243页

作者：王永飞赵升吨张晨阳西安交通大学机械工程学院西安710049

Semi-solid squeeze casting（SSSC） and liquid squeeze casting（LSC） processes were used to fabricate a ZL104 connecting rod, and the influences of the process parameters on the microstructures and mechanical properties were investigated. Results showed that the tensile strength and elongation of the SSSC-fabricated rod were improved by 22% and 17%, respectively, compared with those of the LSC-fabricated rod. For SSSC, the average particle size（APS） and the shape factor（SF） increased with the increase of re-melting temperature（Tr）, whereas the tensile strength and elongation increased first and then decreased. The APS increased with increasing the mold temperature（Tm）, whereas the SF increased initially and then decreased, which caused the tensile strength and elongation to increase initially and then decrease. The APS decreased and the SF increased as squeezing pressure（ps） increased, and the mechanical properties were enhanced. Moreover, the optimal Tr, ps and Tm are 848 K, 100 MPa and 523 K, respectively.

关键词： aluminum alloy semi-solid squeeze casting semi-solid microstructure tensile strength elongation connecting rod

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Modal and Thermal Analysis of a Modified connecting rod of an Internal Combustion Engine Using Finite Element Method

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Modeling and Numerical Simulation of Material Science 2023年第3期13卷 29-49页

作者： Nkrumah Jacob Kwaku Baba Ziblim Sulemana Yahaya Sherry Kwabla Amedorme Automotive Engineering Research Institute Jiangsu University Zhenjiang China Department of Automotive Engineering Tamale Technical University Tamale Ghana Department of Mechanical Engineering Tamale Technical University Tamale Ghana Department of Mechanical and Automotive Engineering Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Kumasi Ghana

The connecting rod is one of the most important moving components in an internal combustion engine. The present work determined the possibility of using aluminium alloy 7075 material to design and manufacture a connecting rod for weight optimisation without losing the strength of the connecting rod. It considered modal and thermal analyses to investigate the suitability of the material for connecting rod design. The parameters that were considered under the modal analysis were: total deformation, and natural frequency, while the thermal analysis looked at the temperature distribution, total heat flux and directional heat flux of the four connecting rods made with titanium alloy, grey cast iron, structural steel and aluminium 7075 alloy respectively. The connecting rod was modelled using Autodesk inventor2017 software using the calculated parameters. The steady-state thermal analysis was used to determine the induced heat flux and directional heat flux. The study found that Aluminium 7075 alloy deformed more than the remaining three other materials but has superior qualities in terms of vibrational natural frequency, total heat flux and lightweight compared to structural steel, grey cast iron and titanium alloy.

关键词： connecting rod Steady-State Thermal Analysis Deformation Heat Flux Thermal and Modal Finite Element Method

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Optimization Analysis of Buckling Strength of connecting rod for Internal Combustion Engine

Optimization Analysis of Buckling Strength of Connecting Rod...

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2019中国汽车工程学会年会

作者： Xu Kunpeng Wu Guangquan Xu Lin GAC Automotive Research ＆ Development Center

Buckling strength is one important indicator of connecting rod *** the increasing of power density of internal combustion engine,the compressive load of connecting rod becomes larger and larger,and bending fracture becomes one of the failure forms under unusual *** this paper,combined with a case of bending fracture of the connecting rod in the development process of a new engine,a design method to ensure the safety of connecting rod is summarized as followed:according to the ultimate stress method,the stress at the middle section of the connecting rod is calculated,the additional stress caused by longitudinal bending is required to be between 10% and 15% of the normal stress,and the structural safety factor is evaluated based on *** the buckling test is carried out to obtain the actual buckling load and consequently the experimental safetyfactor of the connecting rod is *** this method,the buckling strength of many connecting rods of several engines are tested and analyzed *** it is concluded that the experimental safetyfactor of the buckling strength should be greater than 1.5,which provides an optimization method for the design and development of the connecting rod.

关键词： internal combustion engine connecting rod buckling strength safety factor

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Structural Lightweight Design of Engine connecting rod

Structural Lightweight Design of Engine Connecting Rod

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The FISITA 2012 World Automotive Congress--Volume 7:Vehicle Design and Testing(Ⅰ)

作者： Fuxiang Huo Jun Li Yu Xu Bing Wu Yepeng Han Peng Li Qun Zhang The First Automobile Group Co. Ltd R&D Center

The connecting rod is one of the key components of an automotive engine:it works under dynamic loads with complex *** reliability of a connecting rod is critical for an engine *** traditional deterministic numerical simulations of connecting rods,which neglect some uncertain factors,the reliability is guaranteed by introducing overly conservative safety factors,and it nonnally results in a safe but over weighted and suboptimal *** this paper a framework for the sensitivity analysis and reliability based design optimization of a connecting rod is *** most advanced reliability based design optimization and simulation software integration methods will be employed in this research;it seamlessly integrates a sensitivity and reliability analysis driver,a parameter driven CAD tool,and an advanced nonlinear structural analysis CAE software *** entire process will be conducted automatically by command *** the proposed reliability based analysis framework the weight of the connecting rod is reduced by 3.7%without compromising reliability.

关键词： connecting rod Sensitivity Reliability Optimization design ISIGHT integration

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Study on CAD/CAE System of Engine connecting rod

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厦门大学学报（自然科学版） 2002年第S1期41卷 151-页

作者： WANG Yan-yan, XU Xiang-yang, XU Bin, LIN Bo (Automobile Engineering College, Harbin Institute of Technology, Weihai 264209, China)

The intensive competition of automotive market requ ir es shortening the product development circle and improving the product quality. Many of auto manufacturers in china have introduced some CAD/CAE/CAM systems in product development process, and have got some success. But the special and effi cient CAD system aimed at particular product is absent. This paper provides a CA D/CAE system that can realize the integration of CAD and CAE process for engine connecting rod development. The paper discusses some general methods in connecting rod design process, and s ums up structure characteristics of connecting rod. It introduces feature defini tion and feature classification facing connecting rod CAD/CAE system. Based on t he study of the feature technology and the feature of connecting rod, it creates the feature information model and feature database of engine connecting rod . In addition, it creates the parametric model of engine connection rod and real izes variable parametric design and variable structure design. With the help of Pro/Toolkit and Using C++ program to call the user ’s toolbox of Pro/ Engineer software system, the connecting rod CAD/CAE syst em can create connecting rod model automatically to meet the needs of different structure and different type of connecting rod. Based on Pro/Mechanica platform of PTC, the system can implements the Finite Ele ment Analysis and optimization of the connecting rod. Because using the same database in design and analysis, no data lost and no error occurs during da ta transforming. Using the connecting rod CAD/CAE system, the connecting rod can be meshed automatically and the FEA result can be achieved very fast and is very similar to the experiment. In a word, the connecting rod CAD/CAE system developed in this paper can optimiz e the product development process, realize the data share and concurrent enginee ring in the product design and analysis process, shorten the product develop ment circle, and improve the efficie

关键词： CAD/CAE connecting rod feature

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