TY - JOUR
T1 - Preload loss of stainless steel bolts in aluminium plated slip resistant connections
AU - den Otter, Christiaan
AU - Maljaars, Johan
PY - 2020/12
Y1 - 2020/12
N2 - Bolted connections are applied in many aluminium structures. Stainless steel bolts are often preferred over carbon steel bolts in aluminium connections to prevent galvanic corrosion. However, current design standards and guidelines do not allow for using preloaded stainless steel bolts in slip resistant connections, mainly because of a lack of knowledge on the preload loss to be expected in these connections, and this limits the application field of this type of structure. This paper presents a combined empirical and analytical (i.e. mechanical) study into preload losses of stainless steel bolts in aluminium slip resistant connections caused by long-term effects (creep and relaxation), thermal expansion, and lateral contraction. It appears that stainless steel bolts can be applied in aluminium slip resistant connections, but a larger partial safety factor than standards currently prescribe is required for the slip resistance in ultimate limit state.
AB - Bolted connections are applied in many aluminium structures. Stainless steel bolts are often preferred over carbon steel bolts in aluminium connections to prevent galvanic corrosion. However, current design standards and guidelines do not allow for using preloaded stainless steel bolts in slip resistant connections, mainly because of a lack of knowledge on the preload loss to be expected in these connections, and this limits the application field of this type of structure. This paper presents a combined empirical and analytical (i.e. mechanical) study into preload losses of stainless steel bolts in aluminium slip resistant connections caused by long-term effects (creep and relaxation), thermal expansion, and lateral contraction. It appears that stainless steel bolts can be applied in aluminium slip resistant connections, but a larger partial safety factor than standards currently prescribe is required for the slip resistance in ultimate limit state.
KW - Aluminium slip resistant connection
KW - Bolt
KW - Creep
KW - Lateral contraction
KW - Partial factor
KW - Relaxation
KW - Reliability analysis
KW - Stainless steel
KW - Viscoplasticity
UR - http://www.scopus.com/inward/record.url?scp=85089730456&partnerID=8YFLogxK
U2 - 10.1016/j.tws.2020.106984
DO - 10.1016/j.tws.2020.106984
M3 - Article
AN - SCOPUS:85089730456
SN - 0263-8231
VL - 157
JO - Thin-Walled Structures
JF - Thin-Walled Structures
M1 - 106984
ER -