Representative volume element-based simulation of multiple solid particles erosion of a compressor blade considering temperature effect

Abstract

<jats:p> Solid particle erosion is one of the main failure mechanisms of a compressor blade. Thus, characterization of this damage mode is very important in life assessment of the compressor. Since experimental study of solid particle erosion needs special methods and equipment, it is necessary to develop erosion computer models. This study presents a coupled temperature–displacement finite element model to investigate damage of a compressor blade due to multiple solid particles erosion. To decrease the computational cost, a representative volume element technique is introduced to simulate simultaneous impact of multiple particles. Blade has been made of Ti-6Al-4V, a ductile titanium-based alloy, which is impacted by alumina particles. Erosion finite element modeling is assumed as a micro-scale impact problem and Johnson–Cook constitutive equations are used to describe Ti-6Al-4V erosive behavior. In regard to a wide variation range in thermal conditions all over the compressor, it is divided into three parts (first stages, middle stages, and last stages) in which each part has an average temperature. Effective parameters on erosive behavior of the blade alloy, such as impact angle, particles velocity, and particles size are studied in these three temperatures. Results show that middle stages are the most critical sites of the compressor in terms of erosion damage. An exponential relation is observed between erosion rate and particles velocity. The dependency of erosion rate on size of particles at high temperatures is indispensable. </jats:p>

Experimental and numerical prediction of multiple solid particle erosion during a dry micro-blasting process of dental titanium alloy by angular particles based on representative volume element technique

“…In order to completely describe the state of stress in material, an equation of state (EOS) should be used beside the J-C model, since the J-C model just gives relations between deviatoric stresses and strains [54,56]. In the present investigation, Mie-Grüneisen EOS is used to represent the hydrodynamic component of the stress field.…”

“…Furthermore, C is defined as the intercept and S is the slope of the linear fitting of cubic shock velocity ( s u ) versus particle velocity ( p V ), as shown in Eq. ( 6) [56]:…”

“…9, an RVE is, in fact, the smallest part of the material that has all its properties and can individually repeat the behavior of the whole material exactly. This modeling technique which can simulate the simultaneous impact of particles, has been previously used [56] successfully for spherical particles. The RVE dimensions should be selected so that it can represent the erosion behavior completely, and if a particle hits it with any angle, a complete impact occurs; if needed, it impacts and gets separated, or it gets embedded into the surface.…”

Study on the vibration control method of a turboshaft engine rotor based on piezoelectric squeeze film damper oil film clearance

“…Feulner et al (2015) established a model of hail breakage in the low-pressure compressor of a turbofan engine and found that hail breakage mainly occurred during the impact on the first-stage blade. Mohammadi and Khoddami (2020) studied the effects of impact particle size, velocity and angle on the impact behavior of compressor blades under different temperature fields by simulating the impact behavior of compressor blades. Li et al (2021Li et al ( , 2023 and Bin et al (2023) designed and built a Ti-6Al-4V alloy erosion wear test bench to study the distribution area of compressor blade erosion wear.…”

Quantifying the Economic Benefits of Using Erosion Protective Coatings in a Low-Pressure Compressor (Aero-Engine): A Case Study Evaluation

“…In particular, solid particle erosion (SPE) entails the removal of surface material due to the different sizes of solid particles entrained into the GTE that impact on and damage, for example, the compressor blades. This is a characteristic and common problem since GTEs operate across the globe in sandy environments, with an inevitable interaction between sand particles and compressor blades [2]. The sand particles usually hit the blades at high velocity and, in sufficient quantities, even relatively minute particles can induce considerable SPE damage, reducing the fatigue resistance of the blade by generating a concentration of stress at the impact site [3,4].…”