Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

The processing quality of the block hole system affects the working performance of the marine diesel engine block directly. Choosing an appropriate combination of process parameters is a prerequisite to improving the accuracy of the block hole system. Uncertain fluctuations of process parameters during the machining process would affect the process reliability of the block hole system, resulting in an ultra-poor accuracy. For this reason, the RBF method is used to establish the relationship between the verticality of the cylinder hole and process parameters, including cutting speed, depth of cut, and feed rate. The minimum cylinder hole verticality is taken as the goal and the process reliability constraints of the cylinder hole are set based on Monte Carlo, a reliability optimization model of processing parameters for cylinder hole is established in this paper. Meanwhile, an improved particle swarm algorithm was designed to solve the model, and eventually, the global optimal combination of process parameters for the cylinder hole processing of the diesel engine block in the reliability stable region was obtained.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8578651PMC
http://dx.doi.org/10.1038/s41598-021-01567-xDOI Listing

Publication Analysis

Top Keywords

process parameters
20
cylinder hole
20
block hole
16
hole system
16
diesel engine
12
engine block
12
hole
9
reliability optimization
8
process
8
marine diesel
8

Similar Publications

The interactions of three berberine mid-chain fatty acid salts ([BBR][C], n = 6, 7, 8) with lysozyme (Lyz) are investigated in detail using multi-spectroscopic and molecular docking techniques. Steady-state fluorescence and UV-visible absorption experiments suggest that the binding mechanism of [BBR][C] on Lyz is a static quenching with a binding ratio of 1:1. The compound [BBR][C] exhibits a moderate binding affinity toward Lyz.

View Article and Find Full Text PDF

As the global urban heat island (UHI) effect intensifies, understanding how UHI intensity responds to its influencing factors changes is critical for designing effective mitigation strategies. We focused on global megacities, shifted the UHI intensity assessment from physical indicators to human-related parameters, and then evaluated how human-centered UHI intensity responded to influencing factor change. We verified a significant discrepancy between traditional UHI intensity and human-centered UHI intensity worldwide, an average absolute difference of 1.

View Article and Find Full Text PDF

Physicochemical, microbiological, and microstructural changes in germinated wheat grain.

PLoS One

September 2025

Department of Science, LLP "Research and Production Enterprise "Innovator", Astana, Kazakhstan.

This study investigates the physicochemical, microbiological, and microstructural changes in soft wheat grain during germination under varying moisture conditions: moderately dry, moist, and wet. Pre-harvest sprouting can severely compromise grain quality and usability; however, understanding germination-induced changes offers insights into potential utilization strategies. Physical parameters-including thousand-kernel weight, test weight, and falling number-showed strong correlation with germination time, decreasing by 8.

View Article and Find Full Text PDF

Accurate prediction of time-varying dynamic parameters during the milling process is a prerequisite for chatter-free cutting of thin-walled parts. In this paper, a matrix iterative prediction method based on weighted parameters is proposed for the time-varying structural modes during the milling of thin-walled blade structures. The thin-walled blade finite element model is established based on the 4-node plate element, and the time-varying dynamic parameters of the workpiece during the cutting process can be obtained by modifying the thickness of the nodes through the constructed mesh element finite element model It is not necessary to re-divide the mesh elements of the thin-walled parts at each cutting position, thus improving the calculation efficiency of the dynamic parameters of the workpiece.

View Article and Find Full Text PDF

Flaxseed oil contains elevated levels of omega-3 fatty acids (n-3 FA), which have been shown to impact reproductive performance. This study aimed to determine the effects of a flaxseed oil-based supplement on reproductive parameters, feeding behavior, and lipid profile in beef heifers. Sixty Angus and Simmental × Angus heifers (14 months old ± 2 months), blocked by full body weight (BW; 396.

View Article and Find Full Text PDF