{"id":115,"date":"2019-07-30T16:51:41","date_gmt":"2019-07-30T16:51:41","guid":{"rendered":"http:\/\/www.digitool.org\/blog\/?p=115"},"modified":"2019-07-30T16:53:28","modified_gmt":"2019-07-30T16:53:28","slug":"comparison-with-solidworks-simulation-bolt-connector","status":"publish","type":"post","link":"https:\/\/www.digitool.org\/blog\/2019\/07\/30\/comparison-with-solidworks-simulation-bolt-connector\/","title":{"rendered":"Comparison with Solidworks Simulation Bolt Connector"},"content":{"rendered":"\n
\"\"
Fig 1 – Preprocessing of DN100 Flange and Pipe Assembly<\/figcaption><\/figure>\n\n\n\n

The Solidworks Simulation package is an industry standard finite element analysis application.<\/p><\/blockquote>\n\n\n\n

In this article I am going to consider a DN100 bolted flange as a basis for comparison. I have analysed this flanged connection for a single load case in both Simulation (SS) and the Digitool Bolted Connection design (BCD) tool. I will then compare the results of these two methods and explain my findings.<\/p>\n\n\n\n

The assembly has been constrained at the right hand end in all degrees of freedom, as denoted by the green arrows. The flange joint face has a frictionless contact with a friction coefficient of 0.12. A vertical force of 100000 N is applied to the left hand pipe at the cut surface, which generates shear and tensile forces in the bolts. At each bolt hole location, a bolt connector is applied and the model is then meshed and processed. Mesh dependency checks and convergence studies were performed to ensure meaningful results. <\/p>\n\n\n\n

\"\"
Fig 2 – Post Processing of Bolt Connector Forces<\/figcaption><\/figure>\n\n\n\n

Rather intuitively the bolt with the highest loading is at the top dead centre position of the flange. The axial load is 67309 N and the shear force is 4824.1 N. The principle stresses are then calculated and combined using the Von Mises equation to give the equivalent stress.<\/p>\n\n\n\n

\"\"
Fig 3 – BCD Connection Properties and Input Forces and Moments<\/figcaption><\/figure>\n\n\n\n
\"\"
Fig 4 – BCD Results<\/figcaption><\/figure>\n\n\n\n

The above two figures show the inputs for the BCD tool, which is set up using the same boundary conditions as the FEA model.<\/p>\n\n\n\n

\"\"
Fig 5 – Cross Section Showing Clamped Volume for Calculations<\/figcaption><\/figure>\n\n\n\n

The above cross section from BCD illustrates the geometric volume of clamped material which is included in the stiffness calculations. It is assumed that the clamped material is a prismatic solid which is symmetrical about its two centre lines and bounded by the hole centre to edge distance. This is a recommendation of VDI 2230 for a multi bolt joint in the absence of a Finite Element Analysis.<\/p>\n\n\n\n

\"\"
Fig 6 – BCD Bolt Loads<\/figcaption><\/figure>\n\n\n\n

As calculated from the values in Fig 2, the FEA bolt stress is (67309^2 + 3*4824^2)^0.5\/155 = 435 MPa. This compares very well to the BCD calculated stress of 439.8 MPa.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Solidworks Simulation package is an industry standard finite element analysis application. In this article I am going to consider a DN100 bolted flange as a basis for comparison. I have analysed this flanged connection for a single load case in both Simulation (SS) and the Digitool Bolted Connection design (BCD) tool. I will then compare the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[9,8,12,6],"_links":{"self":[{"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/posts\/115"}],"collection":[{"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/comments?post=115"}],"version-history":[{"count":16,"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/posts\/115\/revisions"}],"predecessor-version":[{"id":163,"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/posts\/115\/revisions\/163"}],"wp:attachment":[{"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/media?parent=115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/categories?post=115"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.digitool.org\/blog\/wp-json\/wp\/v2\/tags?post=115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}