Single particle-target plate erosion morphology prediction method based on energy conversion mechanism

Abstract

The invention discloses a single particle-target plate erosion morphology prediction method based on an energy conversion mechanism, and belongs to the field of numerical simulation prediction. The simulation prediction method comprises the following steps: establishing normal, tangential and rolling contact stiffness expressions between a single particle and a target plate in a contact force calculation link in an erosion process; simulating and measuring normal and tangential collision energy between a single particle and a target plate in an erosion process by using a discrete element method; according to the normal collision energy and the tangential collision energy absorbed by the target plate, the normal erosive wear volume lost due to normal low-cycle fatigue damage of the target plate and the tangential erosive wear volume lost due to the ploughing-fracture effect in the single-particle erosion process are calculated respectively; and based on the normal and tangential wear volumes of the target plate in the single particle erosion process, predicting the single particle-target plate surface erosion wear geometric morphology by adopting a geometric superposition method. According to the method, the erosive wear morphology of the surface of the single particle-plastic metal target plate at different incident angles can be effectively predicted.

Description

technical field [0001] The invention relates to the field of numerical simulation prediction, in particular to a single particle-target plate erosion shape prediction method based on an energy conversion mechanism. Background technique [0002] Erosion wear refers to the phenomenon that flowing hard particles hit the metal target plate at a certain angle and speed, causing damage to the target plate material. It widely exists in various engineering fields. For example, the material loss caused by the impact of flowing abrasive particles on the surface of parts such as pipelines, sand blasting machine nozzles, and steam turbine blades is classified as erosion wear. Erosion wear is a common form of wear in industrial production, and it is one of the important reasons for the damage and scrapping of mechanical equipment and its parts and materials, which has brought huge economic losses to industrial production. [0003] From the perspective of formation mechanism, the erosion...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and provide a single particle-target plate erosion morphology prediction method based on the energy conversion mechanism, which can solve the problem that the existing discrete element simulation technology cannot effectively predict the target plate surface The Problem of Single Particle Erosion Wear Morphology

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