Predicted object attributes

Abstract

In an example, a method includes receiving, at at least one processor, object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. At least one of a plurality of different geometrical compensation models to be applied to the object model data may be selected wherein the geometrical compensation models are to determine geometrical compensations to compensate for object deformation in additive manufacturing. An object generation operation based on a modification of the object model data using the or each selected geometrical compensation mode may be simulated and predicted attributes of the object when generated based on the or each simulation may be displayed. FIG. 1

1 . A method comprising:
 receiving, by a processor, object model data representing an object to be generated by an additive manufacturing apparatus by depositing and fusing build material within a fabrication chamber on a layer-by-layer basis;   simulating, by the processor, an object generation operation for each of a plurality of different geometrical compensation models that each specify geometrical compensations to be applied to the object model data to improve dimensional accuracy of the object upon additive manufacture of the object;   selecting one of the different geometrical compensation models based on the object generation operation that has been simulated;   modifying, by the processor, the object model data using the different geometrical compensation model that has been selected; and   causing, by the processor, the additive manufacturing apparatus to generate the object using the object model data as has been modified.   
     
     
         2 . The method of  claim 1 , further comprising:
 for each of the different geometrical compensation models, displaying, by the processor, predictive attributes of the object based on the object generation operation that has been simulated.   
     
     
         3 . The method of  claim 2 , wherein the predicted attributes comprise expected object dimensions of the object. 
     
     
         4 . The method of  claim 2 , wherein the predicted attributes comprise an indication of a proportional deviation of an object dimension of the object based on a magnitude of the object dimension. 
     
     
         5 . The method of  claim 2 , wherein the object is a first object represented by the object model data, the object generation operation is a first object generation operation, and the predictive attributes are first predictive attributes,
 wherein the object model data further represents one or more second objects to be generated by the additive manufacturing process by depositing and fusing the build material within the fabrication chamber on the layer-by-layer basis,   wherein the object model data includes a printable arrangement of the first object and the one or more second objects within the fabrication chamber,   and wherein the method further comprises:
 for each of the one or more second objects, simulating, by the processor, a second object generation operation for each of the different geometrical compensation models; and 
 for each of the different geometrical compensation models, displaying, by the processor, second predicted attributes of each of the one or more second objects based on the second object generation operation that has been simulated. 
   
     
     
         6 . The method of  claim 1 , wherein the different geometrical compensation models comprise different offset parameters and different scaling parameters. 
     
     
         7 . The method of  claim 1 , wherein each of the different geometrical compensation models relate to an intended location of the object to be generated within the fabrication chamber. 
     
     
         8 . The method of  claim 1 , wherein the geometrical compensations to be applied to the object model data are to improve dimensional accuracy of the object upon additive manufacture of the object by compensating for expansion of the object when energy is supplied during additive manufacture of the object. 
     
     
         9 . The method of  claim 1 , wherein the geometrical compensations to be applied to the object model data are to improve dimensional accuracy of the object upon additive manufacture of the object by compensating for deformation of the object during cooling of the object after additive manufacture of the object. 
     
     
         10 . A system comprising:
 a processor; and   a memory storing:
 object model data representing an object to be generated by an additive manufacturing apparatus by depositing and fusing build material within a fabrication chamber on a layer-by-layer basis; 
 a plurality of different geometrical compensation models that each specify geometrical compensations to be applied to the object model data to improve dimensional accuracy of the object upon additive manufacture of the object; and 
 program code; and 
   wherein the program code is executable by the processor to:
 simulate an object generation operation for each of the different geometrical compensation models; 
 select one of the different geometrical compensation models based on the object generation operation that has been simulated; 
 modify the object model data using the different geometrical compensation model that has been selected; and 
 cause the additive manufacturing apparatus to generate the object using the object model data as has been modified. 
   
     
     
         11 . The system of  claim 10 , wherein the program code is executable by the processor to further:
 for each of the different geometrical compensation models, display predicted attributes of the object based on the object generation operation that has been simulated.   
     
     
         12 . The system of  claim 10 , wherein the program code is executable by the processor to further:
 determine print instructions for generating the object from the object model data as has been modified.   
     
     
         13 . The system of  claim 12 , wherein the additive manufacturing apparatus is caused to generate the object using the object model data as has been modified by using to the print instructions. 
     
     
         14 . The system of  claim 10 , wherein the geometrical compensations to be applied to the object model data are to improve dimensional accuracy of the object upon additive manufacture of the object by compensating for expansion of the object when energy is supplied during additive manufacture of the object. 
     
     
         15 . The system of  claim 10 , wherein the geometrical compensations to be applied to the object model data are to improve dimensional accuracy of the object upon additive manufacture of the object by compensating for deformation of the object during cooling of the object after additive manufacture of the object. 
     
     
         16 . A non-transitory machine-readable medium storing instructions executable by a processor to perform processing comprising:
 receiving object model data representing an object to be generated by an additive manufacturing apparatus by depositing and fusing build material within a fabrication chamber on a layer-by-layer basis;   simulating an object generation operation for each of a plurality of different geometrical compensation models that each specify geometrical compensations to be applied to the object model data to improve dimensional accuracy of the object upon additive manufacture of the object;   selecting one of the different geometrical compensation models based on the object generation operation that has been simulated;   modifying the object model data using the different geometrical compensation model that has been selected; and   causing the additive manufacturing apparatus to generate the object using the object model data as has been modified.   
     
     
         17 . The non-transitory machine-readable medium of  claim 16 , wherein selecting the one of the different geometrical compensations comprises:
 accepting selection of the one of the different geometrical compensations.   
     
     
         18 . The non-transitory machine-readable medium of  claim 16 , wherein the geometrical compensations to be applied to the object model data are to improve dimensional accuracy of the object upon additive manufacture of the object by compensating for expansion of the object when energy is supplied during additive manufacture of the object. 
     
     
         19 . The non-transitory machine-readable medium of  claim 16 , wherein the geometrical compensations to be applied to the object model data are to improve dimensional accuracy of the object upon additive manufacture of the object by compensating for deformation of the object during cooling of the object after additive manufacture of the object.