{"id":260920,"date":"2024-10-19T17:17:04","date_gmt":"2024-10-19T17:17:04","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-13906-32014\/"},"modified":"2024-10-25T13:00:47","modified_gmt":"2024-10-25T13:00:47","slug":"bs-en-13906-32014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-13906-32014\/","title":{"rendered":"BS EN 13906-3:2014"},"content":{"rendered":"

This European Standard specifies the calculation and design of cold and hot coiled cylindrical helical torsion springs with a linear characteristic, made from round wire and bar of constant diameter with values according to Table 1.<\/p>\n

Table 1<\/b><\/p>\n

a<\/sup> The user of this European Standard shall pay attention to the design of hot coiled springs, because there can be differences between the design and a real test.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nForeword <\/td>\n<\/tr>\n
6<\/td>\n1 Scope
Table 1
2 Normative references
3 Terms and definitions, symbols, units and abbreviated terms
3.1 Terms and definitions <\/td>\n<\/tr>\n
7<\/td>\n3.2 Symbols, units and abbreviated terms
Table 2 <\/td>\n<\/tr>\n
9<\/td>\n4 Theoretical torsion spring diagram <\/td>\n<\/tr>\n
10<\/td>\nFigure 1 \u2014 Theoretical torsion spring diagram <\/td>\n<\/tr>\n
11<\/td>\nFigure 2 \u2014 Open coiled torsion spring
Figure 3 \u2014 Torsion spring with tangential ends <\/td>\n<\/tr>\n
12<\/td>\nFigure 4 \u2014 Torsion spring with radial ends
5 Design Principles
5.1 General
5.2 Design of the ends <\/td>\n<\/tr>\n
13<\/td>\n5.3 Mounting of the ends
Figure 5 \u2014 Clamped end
Figure 6 \u2014 Not clamped end
5.4 Design of the spring body <\/td>\n<\/tr>\n
14<\/td>\n6 Types of loading
6.1 General
6.2 Static and quasi-static loading
6.3 Dynamic loading <\/td>\n<\/tr>\n
15<\/td>\n7 Stress correction factor q
Figure 7 \u2014 Stress correction factor q depending on the spring index w and\/or on the ration <\/td>\n<\/tr>\n
16<\/td>\n8 Material property values for the calculations of springs
Table 3
Table 4 \u2014 Reference data for the modulus of elasticity and shear modulus (mean values) a, b, c for stainless steel wire (according to EN 10270-3) <\/td>\n<\/tr>\n
17<\/td>\n9 Design formulate
9.1 Design assumptions
9.2 Formulae
9.2.1 General
9.2.2 Spring torque
9.2.3 Angular spring rate <\/td>\n<\/tr>\n
18<\/td>\n9.2.4 Developed length of active coils
9.2.5 Nominal diameter of wire or bar
9.2.6 Inside coil diameter of the spring
9.2.7 Outside coil diameter of the spring
9.2.8 Body length of the spring (excluding ends)
9.2.9 Number of active coils
9.2.10 Torsional angle <\/td>\n<\/tr>\n
19<\/td>\n9.2.11 Spring work
9.2.12 Uncorrected bending stress
9.2.13 Corrected bending stress <\/td>\n<\/tr>\n
20<\/td>\nFigure 8 \u2014 as a function for a radial end <\/td>\n<\/tr>\n
21<\/td>\nFigure 9 \u2014 as a function for a tangential end <\/td>\n<\/tr>\n
22<\/td>\n10 Permissible bending stress
10.1 Permissible bending stress under static or quasi-static loading
10.2 Permissible stress range under dynamic loading
10.2.1 Fatigue strength values
10.2.2 Permissible stress range <\/td>\n<\/tr>\n
23<\/td>\nFigure 10 \u2014 Fatigue strength diagram for torsion spring made of patented drawn wire grade DH according to EN 10270-1 without shot peening
10.2.3 Lines of equal stress ratio <\/td>\n<\/tr>\n
24<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Cylindrical helical springs made from round wire and bar. Calculation and design – Torsion springs<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2014<\/td>\n26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":260923,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-260920","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/260920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/260923"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=260920"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=260920"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=260920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}