TY - JOUR
T1 - Approaching the upper bound of load capacity
T2 - Functional grading with interpenetrating polymer networks
AU - Chen, Zhong
AU - Li, Wenlong
AU - Negahban, Mehrdad
AU - Saiter, Jean Marc
AU - Delpouve, Nicolas
AU - Tan, Li
AU - Li, Zheng
N1 - Funding Information:
Zhong Chen would like to acknowledge the support of Chinese government through the China Scholarship Council (CSC) program (File No. 201206060028 ).
PY - 2018/1/5
Y1 - 2018/1/5
N2 - Functional grading is used to push the load capacity of parts to within the upper bound of what is theoretically possible. Using interpenetrating polymer networks (IPNs), a material system used to achieve grading during printing, the possibility of producing realistic grading of acrylate/epoxy IPNs is studied with the goal of increasing load capacity to within the limit of what is possible, and substantially beyond the load capacity possible with any uniform mixture of this IPN system. In the process, an upper bound of possible improvement is established for a plate with a circular hole in tensions, and the grading for this plate is adjusted to give an optimal load capacity near this upper bound. The optimal grading proposed is different from that shown in previous work due to the simultaneous consideration of both the effect of grading on elastic moduli and on the ultimate stress. A similar study was done for an L-shaped bracket indicating similar improvements over uniform brackets.
AB - Functional grading is used to push the load capacity of parts to within the upper bound of what is theoretically possible. Using interpenetrating polymer networks (IPNs), a material system used to achieve grading during printing, the possibility of producing realistic grading of acrylate/epoxy IPNs is studied with the goal of increasing load capacity to within the limit of what is possible, and substantially beyond the load capacity possible with any uniform mixture of this IPN system. In the process, an upper bound of possible improvement is established for a plate with a circular hole in tensions, and the grading for this plate is adjusted to give an optimal load capacity near this upper bound. The optimal grading proposed is different from that shown in previous work due to the simultaneous consideration of both the effect of grading on elastic moduli and on the ultimate stress. A similar study was done for an L-shaped bracket indicating similar improvements over uniform brackets.
KW - Finite element method
KW - Functionally graded material
KW - Interpenetrating polymer networks
KW - Load capacity
KW - Optimization
UR - http://www.scopus.com/inward/record.url?scp=85031093595&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85031093595&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2017.10.019
DO - 10.1016/j.matdes.2017.10.019
M3 - Article
AN - SCOPUS:85031093595
VL - 137
SP - 152
EP - 163
JO - Materials and Design
JF - Materials and Design
SN - 0264-1275
ER -