lifting analysis of structures

Lock away tools. Due to business development, a Shipyard Co., Ltd. in Guangdong planned to remould a double girder gantry crane of MG32/10-37A5 (32t-37m) into a type of 20t-37m and to heighten 6m lifting height of structure. The synchronous integral lifting method is based on the finite element theory and is a commonly used lifting analysis algorithm for long-span steel roof structures. Lifting, Environmental, and Transportation Studies. This process needs lifting devices to reach up to working location. anchors and lifting clutches and spectral analysis on raw materials. J Biomech 20:135-146 Lab 3: Lifting Statics Analysis of a Lift Static Lifting Problem Lifting is one of the largest risk factors for the development of low back pain. lifting analysis. February 2020. in Structures. by - Forum Structure on - 1:06:00 PM. eSubsea utilise the latest of powerful structural, mechanical and piping analysis software as SAP2000, TRIFLEX and Solidworks Simulation to effectively analyse, verify or design any deep water offshore or subsea structure, foundation structures or piping, equipment, parts or component.. DNVGL-ST-0378 Standard for offshore and platform lifting appliances DNVGL-RP-B401 Cathodic protection design DNVGL-RP-C201 Buckling strength of plated structures been made on weight reduction and cost optimization of the lift arm. • For the splash zone analysis, correct modelling of the stiffness of the crane structure along with the wire is important. The SAP2000 software offer advanced analytical techniques allow for step-by-step large deformation analysis, Eigen and Ritz analyses based on stiffness of nonlinear cases, material nonlinear analysis, multi-layered nonlinear shell element, buckling analysis and progressive collapse analysis. Design and Structural Analysis of Lifting Arm in Processing Lift. we created the 3D model, finite element analysis and placed it on the technical boards. r13 (Civil/Environmental) 29 Jun 20 20:11. We are a professional design shelter with all secondary structures. This is a rigid body motion. Basics of Linear Static Analysis B. Geometry C. Material Properties D. Contact E. Analysis Settings F. Loads G. Supports H. Load and Support Display I. Be sure to list all the steps in the sequence that they are performed. Port risk management (PRM) during port operations is a current problem that can negatively affect the environment, people, and economic issues. The analysis is then carried out to determine the induced stress and the deformation at critical locations on proposed frame. The lifting of pipelines, subsea assets, modules, etc. 1 (ISSN 1053-5381), March 1991. Figure F-2 Swing-Gate Closure Structure. F-12 Figure F-7 Trolley Gate Closure Structure. 1. Lifting operations in heavy industries demands facilities to load and unload large parts from ground to a specified height with reliable mechanism. Hemisphere, New York Washington. Seroussi RE, Pope MH (1986) The relationship between trunk muscle electromyography and lifting moments in the sagital and frontal planes. Scope: Fatigue analysis of boom lift structure & redesign the structures if the welding joints per weldment failing to qualify the allowable fatigue factor • Perform fatigue analysis of boom lift structure as per BS_EN_13001-1-3_2015 (9 Load Cases) standards • ANALYTIX, kinematic tool is used to extract the Load data and to Name any two force methods to analyze the statically indeterminate structures. The FEA results were used and fitted with selected generic equation. 3 Skid Design Solutions. Structural and Piping Analyses. Lifting operations offshore are affected by the action of the waves. For example, Guo et al. This paper presents a method of how to verify the structural integrity of a subsea framework including determination of the maximum allowable sea-state in which the structure is safely installed. Some lifting beams are made with a bottom lug aligned directly below the top lug so that, if the need To fulfil the demand, a study was conducted to design and analyse a scissor lifting machine structures using the finite element analysis. Solving Models K. Workshop 7.1, Pump Assembly With Contact L. Results and . The lifting process of the tanker bottom structure block was simulated by install some eye plates or eye pads on portside block and center block with various position of eye pads. This may seem like a complicated piece of equipment, but in actuality hydraulic lift tables are really very simple in design. lift during working time by modal analysis Keywords- Analysis, Design, Hydraulic Lift, FEA 1. F-10 Figure F-4 Miter Gate Closure Structure. In this paper, state-of-the-art installation analysis based on DnV-RP-H103 with a new approach to model the complex hydrodynamic loads at splash zone is described. The design of lifting padeye requires extremely high safe reliability and economic rationality. Video: Example of Vibration and Structural Dynamic Analysis. Sheeters can be use for compressors, equipment protection, storage, and utilities. Chapter 1 Section 1 . We are one window solution for any kind of shelters structure. The analysis of block lifting on bottom structures of tanker using the finite element method. Security Lock equipment. In lifting operations with objects (e.g., monopiles) lowered from air into the splash zone and towards the sea bed, the dynamic features of the system change continuously. Edition April 2016 Page 3 Design of offshore steel structures, general - LRFD method DNV GL AS The lifting process of the tanker bottom structure block was simulated by install some eye plates or eye pads on portside block and center block with various position of eye pads. -Lifting sets, spreader beams, lifting points and special lifting equipment. 1. The lifting of topsides by crane barges to set-up on Jacket structures. The main concern was the skirt, tailing lug and trunnions. Column analogy method Flexibility matrix method Method of consistent deformation Theorem of least work 2. The goal of the finite element analysis was to successfully predict the . Several different styles of padeyes or lifting lugs are offered giving the user multiple options in selecting an appropriate lifting lug. As your boss told you, it could be a reverse engineering process, as each of the existing was determined by different loading condition, and having different loading scheme/mechanism. The lifting padeyes are widely used in the offshore and shipbuilding industry. STRUCTURAL COLLAPSE TECHNICIAN 02-00 MODULE 4 - LIFTING AND RIGGING SM 4 1 INTRODUCTION A fire officer on a pumper was once asked why he ordered the pumper engineer to drive the 30,000 pound fire apparatus on a road that had a bridge with a 10,000 load limit. A process dominated by transient or highly non-linear responses must be analysed differently from a stationary case. We handle structures made of steel, aluminium, timber and concrete. ¹ Each Job or Operation consists of a set of steps. . In the literature, there is an enormous amount of research related to supply chain risk management (SCRM) in various areas and with various objectives. In this paper, a dynamic lifting analysis of a Pipeline End Manifold (PLEM) structure connected to a 150,000 DWT Single Point Mooring (SPM) buoy with 4-point mooring legs will be reported. INVENTOR and afterward analyzed using Finite Element Analysis software ANSYS. SAFETY PRECAUTIONS DURING OFFSHORE LIFTING Further, experimental analysis is carried out to simulate the result obtained in analysis. Hello World, the first day in 2020. after in previous post about simple model sacs. 2. Analytical calculations do not provide the actual stress pattern & hence FEA is an important tool in such cases. The paper predicts and explains methodology for structural analysis used in presented case study. In order to ensure the life of the lifting clutches, all Halfen lifting clutches undergo dynamic testing. MecaLug is a Padeye or Lifting Lug Calculation Software package that is used to perform padeye or lifting lug calculations as well as analyze loads acting on padeyes or lifting lugs for a structure or piece of equipment. We are one window solution for any kind of supporting structure We have experience with module structures for all applicable pre-service and in-place conditions. The design will provide safety against a) Lug failure, b) Pin failure. 1. Lift and removal of offshore assets in de-commissioning phase. The model used throughout this course consists of a topside, deck support frame (DSF) and transportation barge . Your task then is determine individual strength of the lugs, then back check the . For safety reasons, design is checked under the loading using a method of finite element analysis. GeniE is a tool for concept (high level geometry) modelling of beams, flat plates and stiffened shells. We do perform Steel Structural Analysis using STAAD Pro software, includes to Design and Analysis of Beams, column, Skid, module structural, supports and lifting design. This paper discusses unified analysis, a method that considers the interaction between a crane barge and its hoisted load, as applied both to the motion analysis of the barge-load system subjected to waves and to the transient motion analysis of the barge crawling while lifting a load. The lifting of Jackets from transportation barges, to set on the sea bed. Lifting analysis needs to be carried out to check the integrity of structure during onshore and/or offshore lifting. Safe Load (capacity) 1. [13] analyzed the synchronous integral lifting of the main trusses of the Macao Gymnasium to determine the lifting scheme feasibility. for subsea installations. nonlinear buckling analysis) to make sure that the lift structure and all mechanical components will not buckle, even under absolute worst-case loading conditions. analysis with the standard theoretical acceptable values. INTRODUCTION: The most common industrial lift is the hydraulic scissor lift table. Secure tools. Structural analysis 1. This book will be useful for students and practicing engineer as a quick reference material in this field of interest. Lifting and transportation is a critical aspect with structures of this size. This video demonstrate the lifting ana. The same analysis was carried out for structural steel and aluminum alloy. A reasonable reduction of the DAF is very beneficial for an offshore lifting operation. Also, novel installation methods need to be devised to install heavy structures using small vessels. In this video you will see how to make a static structural analysis on ansys with the model of a lifting eye which is created on solidworks or Rhinoceros For complex structures, where there are great differences between the structural form in the construction process and the design forming state, mechanical analysis of the construction process is required. Table 1: Comparison of stainless steel, structural steel and aluminum alloy with all dimensions of the fork remaining the same Effect of fork parameters The base length taken was 60", Height 46", width 5", thickness 3" and fillet . This yields formulas for the fast engineering evaluation of stress The model that we used in this training come from CO2 Package. Joint stiffness is enhanced by providing 'haunches' that serve to increase the lever arm available at the joint, (below). The analysis of block lifting on bottom structures of tanker using the finite element method. F-13. Previous. Structural analysis of a new lift tower to be built on Power Plant site A new lift tower was to be designed and to be fixed to an existing stair case connected to a boiler's structure. We consider all applicable design loads such as dead load, Live Load, Equipment Load, Piping Load, Wind Load, and Seismic load as per codes and design structure with optimized steel . Seireg A, Arvikar R (1989) Biomechanical analysis of the musculoskeletal structure for medicine and sports. For creating the " tricky" support ,create a new one fixing de X direction , then click on " direction" and give the coordinates of the point where the 4 cables will join.Then assign this support to your 4 lifting points.Check if they´re on the exact same direction of your cables. V is the displaced volume of the submerged object. The validity of unified analysis was confirmed by the results of field measurements taken at the above job site. It is very difficult to settle down in my head 3 things. This model produces compression in the lower longerons of the structure between the lifting points - as it should. Description. Finite element analysis of all load-bearing structural components. software PTC Creo 4.1 and the static structural analysis of welded lift bracket is carried out using analysis software ANSYS workbench 2019 R1 in order to obtain the deformation due to varying lifting load. Tests have proven that a minimum safety factor of 4.0 is achieved on the stated working loads for lifting clutches. Several three dimensional FEM models were developed for the lift tower's sensitivity analysis using software package Robot™ Structural Analysis Professional 2013, MecaLug analyzes the structure at each increment of the lift and calculates the loads acting on the lifting lugs, trunnions, or tailing lugs at each of these increments. A structural frame in which the resistance to lateral loading is provided by the beam to column connections is called a portal frame. After the completion of transformation for the crane, the serious laterodeviations of the crane were found in operational . In this video you will see how to make a static structural analysis on ansys with the model of a lifting eye which is created on solidworks or Rhinoceros The goal of the finite element analysis was to successfully predict the . II. A reasonable reduction of the DAF is very beneficial for an offshore lifting operation. The Lifting Lug of the University of Michigan, TCAUP Structures II Slide 25 of 52 from NDS 2012 Analysis Example Given: member size, material and span. Structural Analysis Software. CREATE STRUCTURE MODEL FOR LIFTING a) Determine padeye location (4 padeye for commonly use): this padeyes location usually determining by suitable location on field. Load on the crane ( and lifting gears) lifting a submerged object can be evaluated by the following equation: F (static) = Mg - ρVg. lifting hooks of trapezoidal cross-section employing finite element analysis (FEA). [8]. In this chapter, performing linear static structural analyses in Mechanical will be covered: A. "Modern Method of Ultimate Strength Analysis ofOffshore Structures," International Journal of Offshore ad Polarengineering, ISOPE, Vol. The officer responded to the question by saying that "it was an emergency". The stress concentration factors were widely used in strength and durability evaluation of structures and machine elements. Contact vs Supports J. RE: Lifting Lug Analysis/Design. ρ is the density of water. In this paper, a dynamic lifting analysis of a Pipeline End Manifold (PLEM) structure connected to a 150,000 DWT Single Point Mooring (SPM) buoy with 4-point mooring legs will be reported. i am new in staad and also new in lifting analysis. Req'd: Max. Bars are articulated at base. Innovative Structural Design has developed a tender lifting crane operated elettrically with three actuators capable to move the arm, to operate the truck and lift the load. Based on finite element analysis (FEA), the variations of stress and deformation with external force and hoist angle are analyzed. This video explains possible lifting phenomenon, It highlights the lifting possibility with two and four lifting lugs. • For lifting analysis of structures with large added mass / submerged weight, modelling of winch speed may represent a worse loading case as compared to the case with zero winch speed in the splash zone.

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