RESEARCH ON ACOUSTIC RADIATION CHARACTERISTIC OF SAW BLADE CUTTING SYSTEM BASED ON MULTI-FIELD COUPLING

TIAN YongJun; DUAN GuoLin; YAO Tao; GANG JianHua; ZHANG E

doi:10.16579/j.issn.1001.9669.2017.04.002

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RESEARCH ON ACOUSTIC RADIATION CHARACTERISTIC OF SAW BLADE CUTTING SYSTEM BASED ON MULTI-FIELD COUPLING

更新时间：2022-09-22

- RESEARCH ON ACOUSTIC RADIATION CHARACTERISTIC OF SAW BLADE CUTTING SYSTEM BASED ON MULTI-FIELD COUPLING
- Journal of Mechanical Strength Vol. 39, Issue 4, Pages: 754-760(2017)
- 作者机构：
  
  1. 河北工业大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.04.002
  CLC：
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TIAN YongJun, DUAN GuoLin, YAO Tao, et al. RESEARCH ON ACOUSTIC RADIATION CHARACTERISTIC OF SAW BLADE CUTTING SYSTEM BASED ON MULTI-FIELD COUPLING. [J]. 39(4):754-760(2017)
DOI：

TIAN YongJun, DUAN GuoLin, YAO Tao, et al. RESEARCH ON ACOUSTIC RADIATION CHARACTERISTIC OF SAW BLADE CUTTING SYSTEM BASED ON MULTI-FIELD COUPLING. [J]. 39(4):754-760(2017) DOI： 10.16579/j.issn.1001.9669.2017.04.002.

摘要

为了对锯切噪声进行定量预估及声场分布规律的研究,提出建立声场、结构、流体多物理耦合模型。利用显式的中心差分算法提取了流固耦合(Fluid Structure Interaction,FSI)作用下多体动态接触时系统的振动响应;基于边界元法-有限元分析建模法搭建了切割系统声学模型,将系统振动响应作为声学边界,对声场辐射进行计算分析。研究了切割系统在半空间环境的声场时域、频域辐射特性;分析了结构与流体间的单、双向耦合对声场的影响;通过计算辐射面积对声功率的影响明确了噪声主要辐射区域。从现场实测数据与数值结果的比较可见,多场耦合分析在切割噪声辐射水平分析及预估方法是正确可行的。

Abstract

In order to study the distribution of sound field and quantitative estimates of the cutting noise,a multiphysics coupling model was constructed.Firstly,the vibration response of the fluid structure interaction system was extracted under multibody dynamic contact by using method of center difference.Moreover,a co-simulation method for the acoustic radiation model based on the boundary element method and acoustic coupling theory was presented.On this basis,a structure acoustic coupling model was established to calculate the sound pressure according to the results of the vibration response previously calculated.Then,the sound radiation in time domain characteristics and domain characteristics with the coupled system in half the space is studied.On the basis of the FSI theory,the computing results of the one-way coupling method and two-way coupling method are compared.Finally,the effects of radiating area influence on the sound power is discussed,makes clear the primarily radiation area.As compared with the experimentation results,the multi-field coupling model established in this paper about cutting noise of the saw blade is correct and feasible.

关键词

有限元边界元多场耦合中心差分法噪声

Keywords

FEMBEMMulti field couplingCentral difference methodNoise

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