Together with the crank, it forms a simple mechanism that converts reciprocating motion into rotating motion it is the main function of a conne. A comparison of manufacturing technologies in the connecting rod industry danielle visser department of metallurgical and materials engineering colorado school of mines golden, co 80401 submission to fierf 060608 advisor. The material mostly used for connecting rods varies connecting rod. The high strain on the connecting rod due to tension, pressure and torsional forces requires connecting rod designs with high strength and low weight. Abstract this paper presents a study of redesigning of connecting rod for its weight reductionusing c70s6 material. A connecting rod is one of the most mechanically stressed components in internal combustion engines. Rules for classification and construction vi additional. Also, we can manufacture 40 pieces of these rods at special lengths for no additional charge. Connecting rod made using particulate reinforced aluminum. Connecting rod weight g 582 618 618 connecting rod length mm 150. Prox connecting rods kits contain washers where applicable.
Gp bearing applications gp is a superior material for highly loaded connecting rod bearings. When building an engine it is important to choose the correct connecting rod, not everyone can do this though because the proper information is not provided. Selection of material, shape and manufacturing process for a connecting rod abstract this activity centers on the courses of strength of materials and production design offered at a sophomore level mechanical engineering curriculum. Scan across to the part number required, making sure to select the desired undersize from. Its light and has the ability to absorb high impact, but it comes a. The connecting rods are generally made by forged steel or duralumin or carbon. The function of the connecting rod is to transmit the thrust of the piston to the crankshaft and translate the transverse motion to rotational motion. The main objective is to develop topology optimization model of connecting rod. The geometric model, finite element mesh, physical dimensions, and design variables are shown in figure 3. The connecting rod helps to change the reciprocating motion of a piston into a revolving motion at the crankshaft. Abstract selection of connecting rod for good performance of engine is very difficult. Material properties play an important role in the result of the fe analysis. Apr 16, 2014 in depth behind the scenes look at hot rods u.
With the highquality product range from motorservice, you are always on the safe side. The manley pro series ibeam rod has become the benchmark for fully machinedbillet style high end connecting rods in the performance industry. Keywords crackable connecting rod, material selection, topsis method, ranking 1. The function of the connecting rod is to convert the reciprocating motion of the piston into the rotary motion of the crankshaft. To ensure proper wear of the pushrod tip and adjusting screw we offer pushrod tips in three different materials. In this work existing connecting rod material are replaced by beryllium alloy and magnesium alloy. The connecting rod is the intermediate member between the piston and the crankshaft. A connecting rod is a shaft which connects a piston to a crank or crankshaft in a reciprocating engine. Carbon steels or alloy steels are the most commonly used materials. The function of the connecting rod is to transmit the. This activity centers on the courses of strength of materials and. For manufacturing of connecting rods the various material are available, mostly cast iron was used in automobile sector.
Fem analysis of connecting rod of different materials using ansys. Jun 20, 2015 an overview on different manufacturing processes of connecting rod. Length journal size centerto center big end bore avg. Like crankshafts, the connecting rod should have drilled hole for oil passage. We offer washers in different material exactly as oem is offering in copper and silver. The connecting rod provides the mechanical linkage between piston and crankshaft and must exhibit properties of high strength. Pdf design and analysis of a connecting rod for the 117kw six. The combustion occurs against the top surface of the piston f and pushes the connecting rod g downward, causing the shaft to move in a circular motion. Follow along as we explore most common rad failures and what to look for when inspecting broken parts. Connecting rods manufacturing improvements and process planning tolerance chain analysis and training material silvia garde gonzalez master thesis 2015 kth royal institute of technology. Pdf design and analysis of connecting rod using forged. Fatigue analysis of connecting rod using finite element. Pdf on feb 28, 2014, venkatesh seenivasan and others published design and analysis of connecting rod with modified materials and fea. Design and analysis of connecting rod using forged steel.
Al360 of connecting rod was replaced with aluminium fly ash silicon composite. Selection of material, shape and manufacturing process. Pdf comparision of two different materials for connecting rod. This 8620 material is used in most pushrod tip applications and has a surface hardness of approximately 62 rockwell c. Connecting rods forged 4340 steel connecting rod material.
The material properties are modulus of elasticity e 2. Analysis of connecting rod using composite material. Connecting rod manufacture is a high volume, price sensitive application with strict performance, design and durability requirements. An overview on different manufacturing processes of connecting rod. Design of connecting rod for weight reduction using c70s6. Auto material connecting rod bearing mechanical piston. In this project the material carbon steel of connecting rod replaced with forged steel. Engine connecting rod an overview sciencedirect topics. The material for a connecting rod is selected depending upon the requirement of the i. Multiple weight designs targeting specific markets combined with our finely tuned manufacturing process renders a truly outstanding product. Modern manufacturing process of forged connecting rod. It connects reciprocating piston to rotating crank shaft, transmitting the thrust of the piston to the crank shaft.
Forged steel is currently eco boost mustang material. The connection rod is used to connect the crankshaft and the crosshead. Steel materials are used to design the connecting rod. After selecting the appropriate cross section, the material used in the connecting rod should be chosen wisely because during manufacturing process it has to. The shape of the connecting rod is to be determined to minimize its weight subject to a set of stress constraints. A connecting rod, also called a con rod, is the part of a piston engine which connects the piston to the crankshaft. The material properties are one of the major inputs to perform the fea and optimization. Auto material connecting rod free download as powerpoint presentation. Connecting rod optimization for weight and cost reduction. The sample component development, conclusions drawn from this project and a list of. Connecting rods manufacturing improvements and process planning tolerance chain analysis and training material silvia garde gonzalez master thesis 2015. Current automotive ic engines connecting rods are made of steel. Process process design starts from using our cadif spreadsheet program on the analysis of the forging process,cadif program is to use a simplified geometry and material. Modelling and analysis of the connecting rod effectively carried out through solid works and ansys 14 software and the result were concluded the following manner.
Thermal conductivity is the ability of a material to conduct and transfer heat. Selection of material, shape, and manufacturing process. There are several schools of thought on material selection of powder forged connecting rods. Crowers high performance camshafts, crankshafts, connecting rods, roller lifters, rocker arms, valve train components and large variety of aftermarket engine parts for international and domestic automobiles, diesels, boats, tractors, motorcycles, and trucks. So, it is easy to see that the connecting rod harnesses all of the power produced in combustion and converts it into something useful, in this case a spinning shaft. Sapat college of engineering, management studies and research, nasik 5,india.
In this project the material forged steel of connecting rod replaced with aluminium alloy. In industrial engines medium carbon steel is used for making connecting. After analysis a comparison is made between existing steel connecting rod viz. Alloy steels are used for manufacturing conrods for high performance engines as they provide the required cyclic strength without substantially increasing the dimensions of critical sections. The automobile engine connecting rod is a high volume production critical component. Connecting rod forging numbers page 370 crankshaft forging numbers.
Analysis and optimization of connecting rod with different. Mechanical properties analysis of an almg alloy connecting rod. Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the crankshaft. Generally connecting rods are manufactured using carbon steel and in recent days aluminum alloys are used for manufactured the connecting rods. Cae analysis is carried out to pick the better material. The objectives of the study are to develop structural modeling of connecting rod and perform finite element analysis of connecting rod. Us4425820a connecting rod of a composite material and.
Analysis of connecting rod was carried out using anysy 14. Connecting rod of a composite material formed from reinforcement fibers wound in the form of an endless loop with constant crosssectional shape and the fiber bundle enclosed by a jacket of aluminum. Selection of material the connecting rods are most usually made of steel for lightness and the ability to absorb high impact at the expense of durability titanium for a combination of lightness with strength, at higher cost for high performance engines, or of cast iron for applications such as motor scooters. The connecting rod cr is the main moving part and an important component of an internal com. Tension and compression analysis in reciprocating engine connecting rods. The results can be used for optimization for weight reduction and for design modification of the connecting rod. In order to understand the true impact the automobile has had on our society, we would have to go back in time over one hundred years. Its primary function is to transmit the push and pull from the piston pin to the crank pin, thus converting the reciprocating motion of the piston into rotary motion. Materials with higher fatigue limits such as fractim and vanard 925 can be used for connecting rods subjected to higher loads.
Comparision of two different materials for connecting rod. The objective of the present work is to design and analyses of connecting rod made of aluminium alloy. During its operation connecting rodundergoes various types of loads. The fatigue limit is indicated by the horizontal part of the curve. Learn about materials used in its manufacturing and its characteristics and its functons. Comparision of two different materials for connecting rod using ansys. Finally obtaining the new optimized connecting rod which is comparatively much stiffer than the former 2. The predecessor to the connecting rod is a mechanic linkage used by water mills to convert rotating motion of the water wheel into reciprocating motion. Gp material has good antifriction properties due to the combined action of the proprietary overlay components. Selection of material, shape, and manufacturing process for a. Connecting rod rebuilding cautions engine professional. There are far more manufacturers of con rods who offer steel rods than any other material. Design and analysis of connecting rod for high speed.
Connecting rods t651 billet aluminum connecting rod material. Connecting rods 101 design,material,modifications,and. Design of connecting rod for weight reduction using c70s6 material deepak g. Based on which the high strength carbon fiber connecting rod will be compared with connecting rod made up of stainless steel and aluminum alloy. One school suggests that pf rod material should use an additive such as manganese sulfide to increase rod machinability, as a route to cost control. Crackable connecting rod material selection by using topsis. Material choices 4 last month, we looked further into the use of titanium for con rods and this month we look briefly into the use of steel, which remains in many cases the material of choice for con rods.
Connecting rods can be manufactured from many different materials and designs, each type of connecting rod is designed for a certain application. Pdf analysis and optimization of connecting rod with different. These connecting rods are usually made of steel for production engines, but can be made of aluminium for weightlessness and the capacity to take up high crash at the cost of durability or titanium for a mixture of strength and weightlessness at. The fifth section consists of the actual set listings and pertinent. Pdf analysis and optimization of connecting rod with. Crankshaft design, materials, loads and manufacturing, by.
The material used in the connecting rod should be chosen wisely because during manufacturing process it has to undergo various production processes and. From the result the aa2014 has less deformation and high stiffness followed by aa7075 andaa6061aluminium materials. Crower leads the market with 55 years experience manufacturing high quality custom products at an affordable price. Introduction connecting rods are widely used in variety of automobile engines. Connecting rod rebuilding cautions the aera technical committee offers the following information regarding connecting rod rebuilding cautions. Pistons are commonly made of a cast aluminum alloy for excellent and lightweight thermal conductivity.
This material, when heat treated correctly, exhibits excellent wear properties and is very impact resistant. Here stainless steel, aluminum alloy and high strength carbon fiber 280gsm bidirectional are used to analyze the connecting rod. The materials are changed so that the weight of the connecting rod is less when aluminum alloys and carbon fiber are used by. Gp bearings have a higher maximum work temperature. To reduce the obliquity of the rod with the cylinder axis, its length should be kept as large as possible. Tension and compression analysis in reciprocating engine. They developed the designed model of connecting rod using modelling software. Crackable connecting rod material selection by using.
Weight can be reduced and strength can be achieved by changing the material of the current connecting rod to hybrid composites. Fatigue analysis of connecting rod using finite element analysis 789 the stress at any point on the connecting rod at this axial load can be interpolated from the axial stress analysis results. Fem analysis of connecting rod of different materials. For reciprocating compressor of above 150 kw200 hp, have forged steel connecting rod are used and for compressor less than or equal to 150kw machines ductile iron material is used. Corvette base and z51 corvette grand sport camaro ss manual. Piston and types of piston, definition, function, pdf. Rules for classification and construction vi additional rules and guidelines. This information pertains mostly to heavy duty diesel engines but really applies to any full floating connecting rod using a bushing on the rod small end.
Material used to fabricate the connecting rod depends on the engine. Bedse1 1department of mechanical engineering, savitribai phule pune university gokhale education societys r. Modelling and analysis of different connecting rod material. The fourth section consists of original equipment crankshaft forging numbers references to the correct block number for main bearing applications.
1231 388 232 1061 1606 537 1116 165 1275 281 334 186 474 54 818 1623 501 350 375 929 722 1600 219 470 1101 815 693 1530 599 1091 960 1253 1494 342 333 487 1427 1332