The energy loss of ground source heat pump horizontal headers cannot be ignored. Based
on the similarity theory and the principle of the orthogonal test, a sandbox experiment …

Traditional finishing technology is difficult to realize the precision machining of complex
geometric parts. Abrasive flow machining technology solves this problem well. Taking the …

A calculation method of tooth root stress for large transmission ratio gear and rack is
proposed using a broken-line section model and thermal-mechanical coupling analysis. To …

This research compares spur gears tooth contact stress with two different materials of
Polyoxymethylene (POM) and POM containing 3 wt.% nano-CaCO3 (POM/3C) using the …

This study is a numerical simulation of the effects of inlet pressure and abrasive
concentration factors on the machining of helical internal gears by the abrasive flow. The …

The packer is a key tool to isolate downhole pressure during well testing and completion
operations. The compression packer in the oil and gas wellbore needs to be anchored by …

A ratchet is an essential component of the ratchet pawl mechanism. But the traditional
ratchet strength check method has certain limitations in the design process. In this paper, the …