TY - GEN
T1 - Bolt load loss behavior of magnesium alloy AZ91D bolted joints clamped with aluminum alloy A5056 bolt
AU - Sujatanond, Supamard
AU - Miyashita, Yukio
AU - Hashimura, Shinji
AU - Mutoh, Yoshiharu
AU - Otsuka, Yuichi
PY - 2013/5/2
Y1 - 2013/5/2
N2 - The bolt load loss behavior of AZ91D magnesium alloy bolted joints with a conventional SCM435 steel bolt and an A5056 aluminum bolt was investigated at elevated temperature. The A5056 bolt could reduce the bolt load loss compared to the SCM435 bolt due to smaller mismatch of thermal expansion between the bolt material and the plates. The mismatch of thermal expansion between bolt material and AZ91D plates was found to induce the compressive creep deformation in the AZ91D plates which performed as the main mechanism of bolt load loss. At higher tightening stress, the bolt load loss could be intensified by additional plastic deformation in bolt occurred during the test. Moreover, it is suggested that the plastic deformation could be reduced by decreasing the friction condition in the bolted joint.
AB - The bolt load loss behavior of AZ91D magnesium alloy bolted joints with a conventional SCM435 steel bolt and an A5056 aluminum bolt was investigated at elevated temperature. The A5056 bolt could reduce the bolt load loss compared to the SCM435 bolt due to smaller mismatch of thermal expansion between the bolt material and the plates. The mismatch of thermal expansion between bolt material and AZ91D plates was found to induce the compressive creep deformation in the AZ91D plates which performed as the main mechanism of bolt load loss. At higher tightening stress, the bolt load loss could be intensified by additional plastic deformation in bolt occurred during the test. Moreover, it is suggested that the plastic deformation could be reduced by decreasing the friction condition in the bolted joint.
KW - Aluminum alloy bolt
KW - Bolt load loss
KW - Creep deformation
KW - Magnesium alloy bolted joint
UR - http://www.scopus.com/inward/record.url?scp=84876784402&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876784402&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.313-314.135
DO - 10.4028/www.scientific.net/AMM.313-314.135
M3 - Conference contribution
AN - SCOPUS:84876784402
SN - 9783037856840
T3 - Applied Mechanics and Materials
SP - 135
EP - 139
BT - Machinery Electronics and Control Engineering II
T2 - 2012 2nd International Conference on Machinery Electronics and Control Engineering, ICMECE 2012
Y2 - 29 December 2012 through 30 December 2012
ER -