For numerical analysis cad model of crane hook is prepared using proe and this model is imported in ansys where stress analysis is done by fem. Stresses are calculated in various regions of the crane hook material by assuming crane. A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the. Curved beam formula is used for determination of stresses in crane hook analytically. Crane hooks are highly liable components and are always subjected to failure due to accumulation of large amount of stresses which can eventually. Hooks with safety latches which prevent the shackles or lines from escaping the throat of the hook are recommended. Crane electric cubicle built in the hoist mt 2 electronic control and recording status of the hoist and crane. Stresses are calculated in various regions of the crane hook material by assuming crane hook as a straight beam and curved. During transfer of heavy load, the hook is subjected to failure due to severe stress accumulation at its.
Design, analysis and weight optimization of crane hook. Student 2professor and head 1,2department of mechanical engineering 1,2dypiet, pimpri,pune abstractthe. The following specific information, together with the aise standard no. If a crack is developed in the crane hook, it can cause frac. Design stress analysis of crane hook linkedin slideshare. Structural failure of the crane hook may happen as a crane hook is subjected to continuous loading and unloading. A hook block is an assembly to which the hook of a hoist or crane is. Modeling of crane hook the crane hook is modeled using ptc creo using the dimensions given in the design data book 12.
This not only causes the load to swing, but places. The crane would also need stabilizing members in the plane perpendicular to the drawing. This offering includes standard forged hooks, crossheads, nuts and complete hook suspensions. Feb 27, 2017 design stress analysis of crane hook 1. A crane is designed to lift a load by using ropes or chains. For reducing the failures of hooks the estimation of stresses, their magnitudes and possible locations are very important.
This causes fatigue of the crane hook but the fatigue cycle is very low 6. Th crane hook load tm main plate thichness of padeye. For economic design, x should be as minimum as possible. Dimensions of crane hook the various dimensions for crane hook are taken as follows. Stresses are calculated in various regions of the crane hook material by assuming crane hook as a straight beam and curved beam. However, hooks are often used with shackles or oblong rings. The analysis criterion and the test conditions are. Stress analysis of crane hook and validation by photo. Protect the load and sling from damage select the best sling. Swp, time running, starts, overloads, temperature, load, brake, etc. Design and analysis of crane hook with different materials. To minimize the failure of crane hook 5, the stress induced in it must be studied.
Crane hooks are liable components subjected to failure due to stress in. The crane hook carries a load of 20 kn as shown in given below fig. Crane hooks are highly liable components and are always subjected to failure due to the amount of stresses concentration which can eventually lead to its failure. Crane hooks are one of the important components which are used to transfer materials having heavy loads, mainly in industries. Gantry crane means a crane similar to an overhead crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or other runway. Crane is subjected to con tinuous loading and unloading. Static analysis of crane hook with tsection using ansys. Crane is subjected to continuous loading and unloading. The purpose of this study is to optimize the performance of the crane hook based on stress, geometry, and weight. Spasoje trifkovic et al12 worked on the stress state in the crane hook using exact and approximate methods. Determine the load f so that the maximum stress in the rod is not to exceed 40 nmm 2. A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope.
A crane hook shown in figure below is made of 30mm diameter steel rod. Real time pattern of stress concentration in 3d model of crane hook is. Hook approach, c dimensions and the f approach distance of the hoist are the smallest available on the market. Determination of stress distribution in crane hook by.
To study the stress pattern of crane hook in its loaded condition, a solid model of crane hook is prepared with the help of cmm and cad software. The stress distribution pattern is verified for its correctness on an acrylic model of crane hook using diffused. For a free standing jib crane fs300, fs350, fs350s, wsj360, aj360f, tsj50fs, tsj150fs, pprofs the supporting structure is the foundation which the crane is bolted to or implanted in. Stress analysis of crane hook and validation by photoelasticity.
The block is located at the end of the hoist cable with the load hook attached. Deformation indicatorstwo strategically placed marks, one just below the shank or eye and the other on the hook tip, which allows for a quiccheck measurement to deter. A crane hook plays an important role for material handling from small to large industries. Determination of stress distribution in crane hook by caustic. Tower crane reference manual, the receipt of which is acknowledged, does hereby and for all future time release and hold harmless from any liability, and forever discharge for itself, its administrators and. The geometry is created in another software such as solidworks or creo which must be saved in step format and imported in ansys workbench. To study the stress pattern of crane hook in its loaded condition, a solid model of crane hook is prepared with the help of abaqus software.
Static analysis of crane hook with i section and t. In this analysis the material properties of hook kept constant throughout the analysis and stress is to be reduced by varying different geometric parameters. Fullfield stress analysis of a crane hook model performed. Shaban et al 1 studied the stress pattern of crane hook in its loaded condition, a solid model of crane hook is prepared with the help of abaqus software. The channel contains more tutorials of solidworks,catia. Jan 10, 2018 the geometry is created in another software such as solidworks or creo which must be saved in step format and imported in ansys workbench.
Design and optimization of the geometric properties of a. Figure 1c shows a lifting beam which has good versatility in location of. Crane components for standards cranes lifting equipment. Student 2professor and head 1,2department of mechanical engineering 1,2dypiet, pimpri,pune abstractthe structural strength is the key index to response the load bearing ability of the elevating equipment.
Topics include safe operating procedures, preoperating inspection, proper rigging and lifting, moving and placing a load safely. In this analysis the material properties of hook kept constant throughout the analysis and stress is to be. In numerical analysis, the software based on finite element method was used. During transfer of heavy load, the hook is subjected to failure due to severe stress accumulation at its critical section. A project presentation on design and stress analysis of crane hook submitted to university of mumbai in partial fulfillment of the requirement. Pdf crane hooks are highly liable components and are always subjected to failure due to accumulation of large amount of stresses which can eventually.
The stress distribution pattern is verified for its correctness on an acrylic model of crane hook using shadow optical method caustic method set up. Designed to stringent, globally recognized din standards, our highquality unmachined and machined products range in capacity from 1 to 1250 metric tons. Fullfield stress analysis of a crane hook model performed by. Experimental analysis was performed in laboratory conditions via noncontact optical method of digital image correlation. Crane hooks are highly liable components and are always subjected to failure due to accumulation of large amount of stresses which can eventually lead to its failure. Crane hooks are the components which are used to lift the heavy load in constructional sites and industries. Stress analysis of crane hook with different cross section.
In many unreinforced thermoplastics, it is not even possible to demonstrate by way of. The results of the crane hook analysis in the study using the materials alloy 1. To minimize the failure of crane hook, the stress occurred in it must be studied. Design and stress analysis 0f various cross section of hook ijiet. Display with load indication on hoist, hook, control box or crane. Stress analysis plays an important role in the design of structures like crane hook under loading conditions. By predicting the stress concentration area, the shape of the. In this paper the crane hook model is prepared in creo 2.
Note that this is a simplified view of the crane showing only the primary structural components and the forces in the plane of the applied load. To minimize the failure of crane hook 5, the stress in duced in it must be studied. The stress distribution pattern is verified for its correctness on an. Real time pattern of stress concentration in 3d model of crane hook is obtained. The three dimensional model of the crane hook for three cross sections is shown in the figure 2.
Real time pattern of stress concentration in 3d model of. Photoelasticity, crane hook, finite element method, curved beam, stress optic law. Abstract crane hook is very significant component used for lifting the load with the help of chain or wire ropes. A common machine element problem involving curved beams is the crane hook shown in fig. Shank hooks 53 5 hoist hooks incorporate markings forged into the product which address two 2 quiccheck features. The investigation was realized using numerical as well as experimental analysis. Pdf crane hook is most significant component used for lifting the load. Introduction to jib cranes free standing fs300 base plate mounted free standing fs350 insert mounted. For analysis purpose virtual model of crane hook is. On the other hand, the eye should always be used on a hook or pin with at least the nominal diameter.
On the other hand, the eye should always be used on a hook or pin with at least the nominal diameter of the ropesince applying the dd ratio shows an efficiency loss of approximately 50% when the relationship is less then 11. A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane. Find the stresses in the inner and outer fibres, the given section. The created solid model is imported in ansys for stress analysis.
The design of crane hook is concerned with certain parameters like area of cross section, material, radius of curvature etc. Specifications for design of hot metal ladles, aise. If a crack is developed in the crane hook, it can cause fracture of the hook and lead to serious accident. A project presentation on design and stress analysis of crane hook submitted to university of mumbai in partial fulfillment of the requirement for the degree of bachelor of engineering mechanical submitted by 1. Pdf stress analysis of crane hook and validation by photo. The section at xx is rectangular whose horizontal side is 100 mm. Investigation of stresses in crane hook by fem ijert. Torres et al worked on the causes which led to failure of the crane hook in service. To minimize the failure of crane hook, the stress developed in it shall. Specifications for design of hot metal ladles, aise standard. Failure of a crane hook mainly depends on three major factors i. The shackle properties most significant to this discussion are. Tower crane reference manual, the receipt of which is acknowledged, does hereby and for all future time release and hold harmless from any liability, and forever discharge for itself, its administrators and assigns the said nccco from all and any manner of action or demands whatsoever in law, in admiralty, or in.
The contribution deals with a fullfield stress analysis of the crane hook model. Fb allowable bending stress ft allowable tensile stress fy material yield stress. After optimizing the cross section crane hook the approach turned towards the material saving. The stress distribution pattern is verified for its correctness on an acrylic model of crane hook using. Pdf stress analysis of crane hook and validation by.
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