Weigang Deng's research while affiliated with Inner Mongolia Agricultural University and other places

... The model construction process is illustrated in Figure 10. Gai et al. [28] calibrated the bonding parameters of the potato model and verified the accuracy of these parameters. The bonding parameters are shown in Table 4. ...

... In the initial phase, discrete element simulation analyses and laboratory tests were performed for the first-generation MRP-type grading device for potato [32,33]. The test factors encompassed the height of the horizontal slide rail, inclination angle of the inclined rail, and speed of the horizontal motion of the chain, with classification accuracy and efficiency serving as the experimental indicators. ...

... Regrettably, mechanical damage is unavoidable in mechanized potato harvesting, significantly affecting potato storage and marketing, directly decreasing yield and economic efficiency (Kaundal et al., 2022). Research indicates that the annual worth of the potato processing industry is US$2.5 billion, with losses of $300 million attributed to tuber injuries (Gai et al., 2023). The United States encounters an annual economic loss of about $7.5 million due to potato collision damage (Peters, 1996). ...

... Yan et al. (2023),Liu, Chen, et al. (2022), and utilized the Hertz-Mindlin (No Slip) model for modeling potato polysphere aggregation. However, this model was primarily focused on analyzing various contact behaviors of potatoes, excluding the consideration of peel-breaking damage. ...

... Wang et al., 2016;W. Wang et al., 2019;Xie et al., 2023). Considering the significant effect of the large mass difference on the collision damage on the bulb, pairs of bulbs with a mass difference of less than 0.5 g were considered to be similar in mass, while bulbs with a difference in mass greater than 2 g and less than 2.5 g were considered different, as listed in Table 1. ...

... It has found extensive applications in agricultural research, particularly in impact and compression studies. The ability of FEM to model intricate mechanical responses, including deformation, stress, and energy, has been extensively validated for various fruit scenarios (Ahmadi et al., 2016;Celik, 2017;Deng et al., 2022;Kabas and Vladut, 2015;Li and Wang, 2016;Zheng et al., 2022). In the context of studying fruit bruising, the accuracy of computational simulation results hinges on three key factors: accurate material models, representative geometric models, and appropriate bruise evaluation metrics. ...

... Feng et al. [12,13] determined the restitution coefficient and dropping impact characteristics of potato tubers. Deng et al. [14] designed a friction-collision test rig to investigate the mechanism of potato peel damage. Compared to the enthusiasm for studying the physical properties of potato tubers, far too little attention has been paid to the potato stems. ...

... Up to now, to investigate the formation of potato bruising, considerable studies on the potato impacted with plates using various software (ANSYS, FEA) and devices have already been widely reported (Celik et al., 2019;Deng et al., 2020;Deng et al., 2022). In terms of experiments, most researchers examined not only the influence of tuber properties and impact condition on the bruise volume, area and depth but also the influence of these factors on energy consumption, impact force and acceleration (Mathew et al., 1997;Baritelle & Hyde, 2003;Xie et al., 2018;Huang et al., 2022). ...

... Damage detection and determination methods have also been widely used in collision experiments on vegetables and fruits. Deng et al. (2020) analyzed the factors that affected the peak impact force and damage depth of potatoes using pendulum experiments. After a collision, the potatoes were left at room temperature for 48 h, and the average damage depth was measured for each group using the slicing method. ...

... Previous research has identified methods to determine bruise thresholds using an IRD (Bajema and Hyde 1998;Hyde et al. 1992;Mathew and Hyde 1997;Rady and Soliman 2015). A bruise threshold is defined as the impact force required to damage a potato, but tuber pulp temperature, (Thornton et al. 1973;Smittle et al. 1974;McGarry et al. 1996;Baritelle and Hyde 2001;Xie et al. 2020), cultivar (Blahovec and Židová 2004;Kunkel et al. 1978;Horvath 1986), and tuber hydration (Kunkel and Gardner 1965;Thornton and Timm 1990) are examples of factors that can alter bruise susceptibility and influence the bruise threshold. Rather than create a bruise threshold, this study provided contextual data to aid in determining package handling scenarios that could increase the risk for bruise. ...