The invention discloses a tire vertical force and longitudinal force estimation algorithm based on strain asymmetry. The algorithm comprises the steps that S1, a finite element model is established; s2, verifying the model; s3, obtaining the relation between the longitudinal force and the circumferential strain of the tire; s4, joint estimation of the vertical force and the longitudinal force of the heavy-duty tire based on the asymmetry characteristic value of the circumferential strain curve is conducted, and S1 specifically comprises the following steps that S1-1, firstly, drawing of a two-dimensional model of the heavy-duty tire is completed through AutoCAD, the two-dimensional model is imported into HyperMesh software to be subjected to grid division according to needs, a two-dimensional structure model is obtained, and then the two-dimensional structure model is subjected to dynamic modeling; s1-2, completing other pretreatment modeling steps to obtain a two-dimensional finite element model of the heavy-duty tire; s1-3, when the three-dimensional model of the heavy-duty tire is constructed, rotating the two-dimensional finite element model of the tire in finite element simulation software Abaqus in a manner of editing an inp file command stream by taking the center as a reference point, so as to obtain a three-dimensional structure model of the tire; the device has the advantage of being high in practicability.
本发明公开了基于应变非对称性的轮胎垂向力与纵向力估计算法,包括S1、有限元模型建立;S2、模型验证;S3、得到轮胎纵向力与周向应变的关系;S4、基于周向应变曲线非对称性特征值的重载轮胎垂向力与纵向力联合估计,所述S1中,具体包括以下步骤:S1‑1、首先利用AutoCAD完成重载轮胎二维模型的绘制,将二维模型导入HyperMesh软件对其按需进行网格划分,得到二维结构模型,S1‑2、再完成其余前处理建模步骤可得到重载轮胎二维有限元模型;S1‑3、进行重载轮胎三维模型的构建时,以中心为参照点,在有限元仿真软件Abaqus中通过编辑inp文件命令流的方式对轮胎二维有限元模型进行旋转,可以得到轮胎的三维结构模型;本发明,具有实用性强的特点。
Tire vertical force and longitudinal force estimation algorithm based on strain asymmetry
基于应变非对称性的轮胎垂向力与纵向力估计算法
18.08.2023
Patent
Elektronische Ressource
Chinesisch
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