After calculating the torque, ensure the bolts are not over-stretching and exceeding their yield strength, or some predetermined design stress. This uses the equations from ANSI B1 1-1974 and B18.3.1-1978 which calculates the area carrying the tensile load from the mean of the pitch diameter and the minor diameter. Boltplus Bolt Load Calculation is a free app and what makes it different from similar apps on the market is the speed, ease of use and ability to save all the calculations against a project. Accuracy. 5) Calculate torsional shear force (Fm) To download BoltUp, or for a free 7 day trial of the Informate bolt load calculation software go to: joint-integrity.com. The bearing resistance of the bolt F b,Rd should be verified against the applied shear load F v,Ed in accordance with EN1993-1-8 Table 3.4: To achieve the benefits of the preloading, the clamping force must be higher than the joint separation load. Submit. Last. Due to a variation in friction we recommend in extreme cases to check with the bolt manufacturer, as this chart represents a guideline only. Too much clamping force can also cause severe problems. As a reality check if we approximate to a cross sectional area of 7 mm 2 and a load of 1000 N that gives a tensile stress of 140 MPa which is below yield even for low tensile steels.. 2. Name * First. Bolt Load Calculator. See also this calculator and this table. Tension tooling, powertrain couplings, and accessories designed for power generation applications. Step 1 - Enter Information. An example verification calculation is provided in Fig 4 for a steel plate 1m diameter and 20mm thick impacted by a mass of 0.253kg at 6.581m/s using CalQlata's Plates calculator. K values: waxed (e.g. Open --> Bolt Preload Tension Force Calculator. Torque window, displays torque and defines coefficient of friction Load Graph window, displays bolt stress over a 3 stage time period BTS TAKES THE COMPLEXITY OUT OF BOLT TIGHTENING CALCULATION. BoltUP - Our online bolt load calculator; Informate - Our advanced calculation and procedure software; IDMS Integrity Data Management System - The complete package for managing Bolted Joints from cradle to grave. The Calculators below can be to calculate the ultimate (breaking) load of bolts. of threaded section of each bolt size. Date :-01.01.2003. joined by a bolted joint. Results are in Newtons. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. A t = Tensile Shear Area of Bolt S p = Proof Load of Bolt (or some percentage less than 100% of yield load of bolt, typically 85 % of yield S y) c = 0.75 For connections requiring reuse c = 0.89 For permanent connections . We provide it as a resource for our customers, because the weight of a bolt or assembly is often needed when calculating shipping costs, or jobsite delivery requirements. About this Calculator What is it for? K – constant d – diameter of bolt (m, in) F – axial bolt force or load (N, lb) Force = Bolt Load = ? The accuracy of all calculations performed in the shock load calculator is … Higher or lower values of clamp load can be used depending on the application require- The minimum required bolt load divided by the number of bolts in the flange will determine the minimum f, or force, needed to use the torque equation. Bolt load is calculated from the design stress (SAE, ISO or ASME), bolt size (UNC, UNF, BSW or ISO) and the tensile area (ANSI or ISO threads). 8) NOMINAL BOLT SLIP LOAD - This is the nominal slip load shear loads applied to the joint should be below this value. Area = Tensile Stress Area = 0.6057 sq.in (For 1” bolt from ASME PCC-1) Force (Bolt Load) = 105000 X 0.6057 = 63598.5 lb Kindly confirm if this can be used to calculate bolt load before using T=KFD to calculate the torque value Use to determine Torque, Bolt Load and Percent Yield of Maximum Load of Bolts. Bolt Torque Calculator; US Bolts - Tensile Strength and Proof Loads ; Proof Load. Both lateral (single and double shear) and withdrawal capacities can be determined. BOLT ULTIMATE STRENGTH CALCULATORS. The lower calculation table considers simulaneous axial (Fa) and shear … Note: tensile axial forces (Fa) applied to the joint will reduce the slip load. Load Calculator Quickly find the tensile, yield, proof, and estimated shear strengths of your bolts. The Bolt load loss is a direct loss of stud elongation, this is due to many different factors, such as thread deflections, radial expansion of the nut and ‘bedding in’ of In the continuation, the paper briefly presents the model for operating bolt load calculation and the method for the calculation of structure elasticity and stiffness matrices and presents a comparative analysis of the results obtained through different calculations and measurements. The calculation makes enables graphical representation of load-extension diagrams and scale drawings. This calculator can be used as an aid to help estimate the weight of bolts, nuts, and washers. Clamp load is also known as preload or initial load in tension on bolt. is calculated by arbitrarily assuming usable bolt strength is 75% of bolt proof load (psi) times tensile stress area (sq. Tensioning sequence information. Bolt Load Calculator Please note that the above data is based on bolts lubricated to manufacturer’s spec. Thanks a lot for your clarifications. Shear Capacity at 160N/mm THREADS IN SHEAR PLANE. Explore the possibilities. The Informate’s bolt load values are independently verified to ensure leak-free joints, every time. 2. kN. With too little clamping force, the joint may loosen. Bearing strength of bolts. Hydraulics. Bolt Load Calculation Software Hydratight introduces Informate: the next generation of software that provides bolt loads and tool pressures on a huge range of flanged joints and clamped connections. To solve bolting groups in general: 1) Find the bolt group centroid 2) Determine directional vectors for each bolt with distance Rn 3) Calculate direct shear load for both the weight and applied load (Fv) 4) Calculate Reaction Moment (M) at the bolt group centroid. Gross Area. Finding Tension Loads on Fastener Group This procedure is similar to the shear load determination, except that the centroid of the fastener group may not be the geometric centroid. F v,Ed is the applied shear load and F v,Rd is the shear resistance of the bolt. Single. Pb = Bolt axial load resulting from yield, ultimate or joint separation load V = Bolt shear load resulting from limit load ... the calculation of the maximum and minimum preloads: (a) The maximum and minimum torques of the specified torque-range plus any prevailing torque (Tmax, Tmin and Tp). Proper amount of tensioning of the bolts is vital. The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. Metric bolt grades and strength calculator to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10.9 and 12.9. 1) Enter thread diameter nominal value in section Thread Size.Click on info button for more info. The preferred bolt preload for structural applications should be at least 75% of the fastener's proof load for the higher strength fasteners and as high as 90% of the proof load for permanent fasteners. the bolt load is transferred from the Tensioner to the joints hexagon or round nuts. Learn More. Try this bolt pattern force distribution calculator, which allows for applied forces to be distributed over bolts in a pattern. Accuracy of Bolt Preload Based on Bolt … Quick Input Quick input provides input of all data in only one dialogue window. Bolt Torque Calculator. Product Lines. But also the possibility to make a request for a special tensioner or enquire about your selections directly in the app. RE: ASME flange calculations design bolt load Vs. applied bolt load … Bolt Stress window, displays bolt stress, bolt load and % of bolt yield. Email * Website. Calculate bolt design stress and design load from bolt diameter and yield stress or proof stress. Connection Calculator Provides users with a web-based approach to calculating capacities for single bolts, nails, lag screws and wood screws per the 2015 NDS . Calculation Basis SR1 Software calculates, in accordance with VDI 2230, high-stress bolted joints with concentric or eccentric strain and load. Some notes from ISO 898 metric screw threads standards: By over-tightening the bolt, one may exceed the proof load of the bolt. A material must remain in its elastic region when loaded up to its proof load typically between 85-95% of the yield strength. Actually what I do not understand in ASME is that the bolt load used for design seems different from the true bolt load (as the one I describe just above). If the joint is exposed to cyclical loads, too little clamping force can shorten the bolt’s fatigue life. 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