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Thermomechanical Coupling of a Hyper-viscoelastic Truck Tire and a Pavement Layer and its Impact on Three-dimensional Contact Stresses
Transportation Research Record: Journal of the Transportation Research Board ( IF 1.6 ) Pub Date : 2021-07-19 , DOI: 10.1177/03611981211017140
Angeli Jayme 1 , Imad L. Al-Qadi 1
Affiliation  

A thermomechanical coupling between a hyper-viscoelastic tire and a representative pavement layer was conducted to assess the effect of various temperature profiles on the mechanical behavior of a rolling truck tire. The two deformable bodies, namely the tire and pavement layer, were subjected to steady-state-uniform and non-uniform temperature profiles to identify the significance of considering temperature as a variable in contact-stress prediction. A myriad of ambient, internal air, and pavement-surface conditions were simulated, along with combinations of applied tire load, tire-inflation pressure, and traveling speed. Analogous to winter, the low temperature profiles induced a smaller tire-pavement contact area that resulted in stress localization. On the other hand, under high temperature conditions during the summer, higher tire deformation resulted in lower contact-stress magnitudes owing to an increase in the tire-pavement contact area. In both conditions, vertical and longitudinal contact stresses are impacted, while transverse contact stresses are relatively less affected. This behavior, however, may change under a non-free-rolling condition, such as braking, accelerating, and cornering. By incorporating temperature into the tire-pavement interaction model, changes in the magnitude and distribution of the three-dimensional contact stresses were manifested. This would have a direct implication on the rolling resistance and near-surface behavior of flexible pavements.



中文翻译:

超粘弹性卡车轮胎与路面层的热机械耦合及其对三维接触应力的影响

进行超粘弹性轮胎和代表性路面层之间的热机械耦合,以评估各种温度分布对滚动卡车轮胎机械性能的影响。两个可变形体,即轮胎和路面层,经受稳态均匀和非均匀温度分布,以确定将温度作为接触应力预测变量的重要性。模拟了无数环境、内部空气和路面条件,以及施加的轮胎载荷、轮胎充气压力和行驶速度的组合。与冬季类似,低温剖面会导致轮胎与路面的接触面积变小,从而导致应力局部化。另一方面,在夏季高温条件下,由于轮胎与路面接触面积的增加,较高的轮胎变形导致较低的接触应力幅度。在这两种情况下,垂直和纵向接触应力都会受到影响,而横向接触应力的影响相对较小。但是,这种行为可能会在非自由滚动条件下发生变化,例如制动、加速和转弯。通过将温度纳入轮胎-路面相互作用模型,三维接触应力的大小和分布的变化得到体现。这将对柔性路面的滚动阻力和近表面行为产生直接影响。而横向接触应力的影响相对较小。但是,这种行为可能会在非自由滚动条件下发生变化,例如制动、加速和转弯。通过将温度纳入轮胎-路面相互作用模型,三维接触应力的大小和分布的变化得到体现。这将对柔性路面的滚动阻力和近表面行为产生直接影响。而横向接触应力的影响相对较小。然而,这种行为可能会在非自由滚动条件下发生变化,例如制动、加速和转弯。通过将温度纳入轮胎-路面相互作用模型,三维接触应力的大小和分布的变化得到体现。这将对柔性路面的滚动阻力和近表面行为产生直接影响。

更新日期:2021-07-20
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