auts: commit work

calc_mats.py

@@ -0,0 +1,23 @@
+#!/bin/env python
+
+import sys
+
+if len(sys.argv) < 3:
+    print("usage: %s mat_density model_mass" % sys.argv[0])
+    exit()
+
+mat_density = int(sys.argv[1])
+
+model_mass = int(sys.argv[2])
+
+mat_volume = model_mass / mat_density
+result_bits = mat_volume / (1.0/100)
+
+print("mat_density:", mat_density)
+print("model_mass:", model_mass)
+print("")
+print("result:")
+print("mat_volume:", mat_volume)
+print("result_bits:", result_bits)
+print("")
+print("done")

todo.txt

@@ -7,3 +7,129 @@
     - use it in case of decomposition or effects
 
 - add containers
+
+? - do we need actual bits for models or just BitInfo?
+    (summary of bits used for construction/deconstruction/recycling)
+    which can be calculated by for example volume and element/material,
+    or even weight/density [automatic] formula
+
+    example formula for concrete pipe calculation:
+
+	  element dentisy (d) = 2400 kg/m3
+	  
+      pipe diameter = 1200 mm
+      pipe mass per meter = 1600 kg
+      pipe length = 3 m
+      total pipe mass (mass) = 1600 * 3 = 4800 kg
+
+      amount material = 4800 (mass) / 2400 (d) = 2.0 m3
+
+      amount material bits = 2.0 / (1.0/100.0) (10cm x 10cm x 10cm) = 200 bits
+
+      result: 200 bits of concrete (1bit = 10cm x 10cm x 10cm (10cm3))
+
+    - XXX try to calculate more complex things like truck materials/bits
+
+      truck elements:
+        - 4 wheels
+          - materials (tires):
+            rubber
+          - materials (hubs (minor?)):
+            steel
+        - cab
+          - materials:
+            glass (windows)
+            electric (wires, lights, etc)
+            plastic (panels, (minor?))
+        - steel frame
+          - materials:
+            steel
+        - hull
+          - materials:
+            steel
+        - engine/transmission block
+          - materials:
+            steel
+        - wheel axles and suspension
+          - materials:
+            steel
+       
+      test truck model:
+        Tatra 148
+
+        weight: ~10,000 kg
+		num tires: 10 (3 axel)
+		tires: 20"
+		engine weight: 845 kg
+
+
+	  elements:
+	    tires:
+
+	    1 tire weight = 20 kg
+	    total tire weight = 20 * 10 = 200 kg
+	    
+		material density (rubber) = 1000 kg/m3
+		total volume = 0.2 m3
+		total bits = 20 bits
+
+		weight left = 10000 - 200 = 9800
+
+
+		engine block:
+
+		weight engine = 845 kg
+		weight transmission = 300 kg (guess)
+		total weight = ~1200 kg
+		
+		material density (steel) = 8000 kg/m3
+		total volume = 0.15 m3
+		total bits = 15 bits
+
+		weight left = 9800 - 1200 = 8600
+
+
+		the rest:
+		
+		approx. all steel
+		total weight = 8600 kg
+
+		material density (steel) = 8000 kg/m3
+		total volume = 1.075 m3
+		total bits = 107.5 bits
+		
+
+		result:
+		rubber bits: 20
+		steel bits: 122.5
+
+    XXX questions:
+      - what kind of production processing needed for material processing?
+      - need to use special techniques to process steel/rubber?
+      - what kind of production line/chain can be used?
+      - what kind of special non-listed elements/materials is used in truck?
+        for example: car battery/lead?
+      - can it use products from other factories?
+        like windows or car battery or metalworking/metal parts or car parts?
+      - what kind of processing equipment is needed?
+        where the equipment can be located?
+
+    XXX elements that can be ignored (material-wise(?)):
+      - small elements (usually <1 bit in total)
+      - non-essential elements
+      - paints
+      - fastening (?)
+      - wires (?)
+      - misc items that can be grouped (and produced in bulk) (?)
+
+--
+
+truck production requerements/details:
+
+	elements:
+	  steering wheel (steering column):
+	    processing/technique:
+	      lathes operations (metalworking):
+	      	time 10 minutes (guess)
+      tires:
+        ?