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Serial packing of arbitrary 3D objects for optimizing layered manufacturing

机译:串行打包任意3D对象以优化分层制造

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Abstract: Parallel approaches for packing arbitrary 3D objects into fixed volumes are characterized by rearranging all of the parts simultaneously and evaluating the results. The practical application of each proposed approach to real world problems has been hindered by the computational time required to find a solution or over simplifications made to reduce the time required. A serial approach is proposed in this paper that reduces the complexity of the problem domain by packing each object one a time as `best as possible', thus more closely emulating the way a human might arrange items in the trunk of a car. This technique has enabled the implementation of an efficient packing algorithm that is not limited by working with the object's bounding boxes and or by a restricted set of permissible orientations. Preliminary tests demonstrate that the technique reduces computational times, on average, by a factor of 19 or more compared to an existing technique. Furthermore, the new approach is guaranteed to produce a viable packing arrangement for a subset of the parts even if every part cannot possibly be accommodated in the available volume, a typical situation found in rapid prototyping service bureaus. The same cannot be said for existing parallel packing algorithm implementations.!7
机译:摘要:将任意3D对象打包成固定体积的并行方法的特点是同时重新排列所有零件并评估结果。找到解决方案所需的计算时间或为减少所需时间而进行的过度简化已阻碍了每种提出的方​​法在实际问题上的实际应用。本文提出了一种串行方法,该方法通过“尽可能最佳”地一次打包每个对象来降低问题域的复杂性,从而更紧密地模拟人在汽车后备箱中放置物品的方式。该技术实现了有效的打包算法,该算法不受使用对象的边界框或受限制的一组允许方向的限制。初步测试表明,与现有技术相比,该技术平均可将计算时间减少19倍或更多。此外,即使在快速成型服务局中都无法找到典型的情况,即使每种部件可能无法容纳在可用的体积中,新方法也可以保证为部件的一部分生产可行的包装方案。对于现有的并行打包算法实现,不能说相同!! 7

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