Us4425820a connecting rod of a composite material and. The connecting rod provides the mechanical linkage between piston and crankshaft and must exhibit properties of high strength. Current automotive ic engines connecting rods are made of steel. Pdf design and analysis of connecting tie rod assembly for. I need to make sixteen connecting rod studs for a 1911 marmon. This activity centers on the courses of strength of materials and. Weight can be reduced and strength can be achieved by changing the material of the current connecting rod to hybrid composites. Design and buckling analysis of two wheeler connecting rod.
Connecting rods callies precision engine components. Modeling and analysis of two wheeler connecting rod citeseerx. This material, when heat treated correctly, exhibits excellent wear properties and is very impact resistant. Selection of material, shape and manufacturing process. The rod must be straight, centertocenter rod length must meet design specs, the pin bore and bigend bore must be perfectly round, each bore must be sized appropriately for wrist pin and crank. The ultra hbeam configuration was recently added as part of our expanding connecting rod line. Connecting rod manufacture is a high volume, price sensitive application with strict performance, design and durability requirements. This thesis has been focused on the study of the connecting rod manufacturing process. Connecting rod piston titanium free 30day trial scribd. As the connecting rod is rigid, it may transmit either a push or a pull and so the rod may rotate the crank through both halves of a revolution, i. Aluminium alloys also can be used for these as an alternative.
Design and analysis of connecting rod with modified. There are far more manufacturers of con rods who offer steel rods than any other material. Its light and has the ability to absorb high impact, but it comes a. Pdf selection of connecting rod for good performance of engine is very difficult. The maximum stress of the connecting rod monitored and make sure it is not over the allowable stress. The connecting rod is required to transmit the compressive and tensile forces from the piston, and rotate at both ends. This paper focuses on modifying the old tie rod design and material. A connecting rod, also called a con rod, is the part of a piston engine which connects the piston to the crankshaft.
Steel and aluminum materials are used to design the connecting rod. Engine connecting rod an overview sciencedirect topics. The load of the connecting rod optimized is comprised of the tensile load of 26. Though lot of work has been done to reduce connecting rod weight there is a scope to try other materials for connecting rod to produce light weight alternative. First of all, to find the stress on the connecting rod, we use the formula.
The finite element analysis helped to define the tapered shape of the small end of the connecting rod, and it helped in the selection of 4340 steel as the connecting rod material. In this study three materials al360, beryllium alloy 25 and magnesium alloy have considered for analysis. Connecting rods forged 4340 steel connecting rod material. The increased demand is due to improved performance and reduced cost of these components. 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. Material design for advanced connecting rod for mass.
The oem threads are 3820, so i need to use that thread for the end that goes into the rod beam. The small end which connect the connecting rod to the piston through the piston pin. Gp material has good antifriction properties due to the combined action of the proprietary overlay components. Parting edge where cap and the rod meet is fractured. This is accomplished by calculating the dynamic force caused by the oscillating piston and connecting rod. After analysis a comparison is made between existing steel connecting rod viz. The divided bearing is enclosed by an inner and an outer bearing bail and by the free ends of a fiber reinforced loop which surrounds the. Fatigue analysis of connecting rod using finite element. Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the crankshaft.
Sep 30, 2017 the material changes depending on the application. Auto material connecting rod bearing mechanical piston. A connecting rod can rotate at both ends, so that the angle between the connecting rod and the piston can change as the rod moves up and down and rotates around the crankshaft. Material property unit scalar value modulus of elasticity gpa 206. Design and analysis of connecting rod using forged steel. Normally connecting rod is made by forged steel, aluminium or cast iron. The rod is made of fiber reinforced synthetic materials. Manufacturing procedures, equipment and tools investment can be decreased and energy consumption reduced remarkably in this method.
Well, its really not a connecting rod bolt, it is a stud, but thats probably not a big difference. Analysis of connecting rod using composite material. Material selection for manufacture of connecting rods. Fem analysis of connecting rod of different materials using ansys. Connecting rod made using particulate reinforced aluminum. Generally, tractor connecting tie rod gets failed due to the overload applications. Materials edit aluminium rod with modular head and bushing in the foot left, aluminium oil drip rod with pats centre, steel rod right. Gp bearing applications gp is a superior material for highly loaded connecting rod bearings. Al360 of connecting rod was replaced with aluminium fly ash silicon composite. International journal of mechanical engineering and technology ijmet, issn 0976. Connecting rod material are used drop forged heat treated steel to boost up strength as the factor of safety for the design of connecting rod is very high as it has to with stand impact loading. Pdf design and analysis of connecting tie rod assembly. Powdered metal pressed together and then put into an oven where it is sintered that means granuals are melted together and forms the rod.
Weight can be reduced and strength can be achieved by changing the material of. For future research, the optimization should cover on material optimization to increase the strength of the connecting rod. The material used in the connecting rod should be chosen wisely. A connecting rod basically connects the piston to the crankshaft whilst transmitting power of the combustion from the combustion chamber to rotate the crank. Design and analysis of assembly of piston, connecting rod and.
A connecting rod is one of the most mechanically stressed components in internal combustion engines. They developed the designed model of connecting rod using modelling software. Connecting rod free download as powerpoint presentation. The first step in the process of designing a connecting rod bolt is to determine the load that it must carry. Design and anal y sis of connecting rod for different material dr. Made from the same premium grade timkensteel material, the ultra h is designed to satisfy the requirements of the most demanding racing applications. 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. In this project the material forged steel of connecting rod replaced with aluminium alloy.
Analysis of connecting rod was carried out using anysy 14. Selection of material, shape, and manufacturing process for a. Modelling and analysis of different connecting rod material. Steel materials are used to design the connecting rod. In this in order to have a connecting rod equally strong in buckling about both the axis, the buckling loads must be equal. Crackable connecting rod material selection by using.
Here, the connecting rod is replaced by various materials like stainless steel, aluminium. A connecting rod has a closed bearing at one end for connecting, for exam, a piston bolt to the rod. Fracture split connecting rods must only be handled if the two pieces of the connecting rod are tightened to the correct specification, or are completely separated. C70 steel and also a design change by inducing truss member is. A comparison of manufacturing technologies in the connecting. Youngs modulus e 210 gpa, yield strength s y 210 mpa, poissons ratio. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Here stainless steel, aluminum alloy and high strength carbon fiber 280gsm bidirectional are used to analyze the connecting rod. To ensure proper wear of the pushrod tip and adjusting screw we offer pushrod tips in three different materials. The load pattern illustrated in the figure above and the design criteria for the connecting rod lead to the test method used in this study. Compared with traditional methods, this technique has remarkable advantages. Analysis and optimization of connecting rod using alfasic.
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. Pdf design and analysis of connecting rod with modified. Design and analysis of assembly of piston, connecting rod. Connecting rod suspension spring transmission gears steel radial tires are excellent in safety and are very economical making them very popular.
Fracture splitting method is an innovative processing technique in the field of automobile engine connecting rod conrod manufacturing. Then modelling of connecting rod is import on ansys 15. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Desi gn a n d an aly sis o f co nn ecti ng rod f or di ff ere n t material 18.
Us4546669a connecting rod made of fiber reinforced. Auto material connecting rod free download as powerpoint presentation. The connecting rod subjected to tensile load at crank end, while using factor of safety 3 as recommended by shenoy 2004. This forging part is a single part weighting 540 grams,the distance from the centerline of the connecting rod to the centerline is 129. Forces due to the cylinder pressure as well as the mass of the connecting rod and the piston assembly are illustrated in figure 2. In this project the material carbon steel of connecting rod replaced with forged steel. The proper condition of a connecting rod is fairly straightforward. Stress analysis of connecting rod for weight reduction citeseerx. Fem analysis of connecting rod of different materials. 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.
At the other end the rod has a divided bearing for connecting, for example, a crankpin to the rod. The small end is attatched to the piston pin and the big end connects to the bearing journal on the crank. The two pieces of the connecting rod cannot be rubbed together. Learn about materials used in its manufacturing and its characteristics and its functons. Us4425820a us06231,008 us23100881a us4425820a us 4425820 a us4425820 a us 4425820a us 23100881 a us23100881 a us 23100881a us 4425820 a us4425820 a us 4425820a authority us united states prior art keywords connecting rod fibers form composite material jacket prior art date 19800208 legal status the legal status is an assumption and is not a legal conclusion. Modern manufacturing process of forged connecting rod. This 8620 material is used in most pushrod tip applications and has a surface hardness of approximately 62 rockwell c. Tension and compression analysis in reciprocating engine. A a weight can be reduced by changing the material of the current al360 connecting rod to hybrid alfasic composites.
We have received high acclaim both domestically and overseas, as one of the most reliable makers of wire rods for steel cords. This force is determined from the classical concept that force equals mass times acceleration. Sarkate et al, 20 carried out an analysis to find out an optimum material for connecting rod. For superior clamping, a bolt upgrade to custom age 625 material is available for all callies ibeams. The results obtain by fea for both aluminum 7068 alloy and. The ductile iron connecting rod experienced an average life of 1,605,902 cycles at a 50% survival rate or 635,811 cycles at a 90% survival rate. The average life of a malleable iron connecting rod was 764,962 cycles at a 50% survival rate or 347,734 cycles at a 90% survival rate. The mechanical properties of the c55mn75 material connecting rod are shown in table 2. The analysis of the scania line together with a benchmark among different leading companies on the connecting rod manufacturing has been undertaken. Each rod has four 38 by 2 studs holding the cap to the rod beam.
A a the new optimised connecting rod is comparatively much stiffer than the former. Design and analysis of connecting rod with modified materials. Some materials used for production of engine connecting rods in russia. Connecting rod rebuilding cautions engine professional. Gp bearings have a higher maximum work temperature. The objective of the present work is to design and analyses of connecting rod made of aluminium alloy. The existing connecting rod material is steel c55mn75 which is used in the vehicle like trump 40 travelers etc. A connecting rod made of fiber reinforced synthetic material and having a longitudinal rod axis, comprising a first rod head at one end of the rod, said first rod head including a cylindrical closed bearing 6, a second rod head at the other end of the rod, said second rod head forming a divided bearing inclduing an inwardly disposed bearing bail 5 made of a material with. Table iii material properties of connecting rod11 sr. A connecting rod is subjected to a cyclic load during its service. Therefore we can try new composite materials like titanium alloy, carbon fibre, glass fibre etc. Gopal et al design and analysis of assembly of piston, connecting rod and crank shaft 237 international journal of current engineering and technology, vol. Jun 20, 2015 introduction what is a connecting rod.
Reduction in machining operations, achieved by change in material, is a significant factor in manufacturing cost. The relative cost of casting the conrod as a function of the production. Modelling and analysis of different connecting rod. Table iii material properties of connecting rod 11 sr. Solid45 element type is use for connecting rod material. Pdf analysis and optimization of connecting rod with different. Selection of material, shape, and manufacturing process.