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Lecture 1 PDM

PDM stands for Product Data Management and is commonly used along with PLM (Product Lifecycle Management). PDM manages three product data lifecycles: physical documents, digital files like CAD drawings and models, and information stored in databases. It handles product data throughout a product's development, from design and approval processes to the beginning and end of production. As design has become more collaborative, involving multiple functions, disciplines, and organizations, there has been a proliferation of enormous amounts of product data, creating challenges in how to control, manage, and keep track of it all. PDM systems have evolved to address these challenges.

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121 views11 pages

Lecture 1 PDM

PDM stands for Product Data Management and is commonly used along with PLM (Product Lifecycle Management). PDM manages three product data lifecycles: physical documents, digital files like CAD drawings and models, and information stored in databases. It handles product data throughout a product's development, from design and approval processes to the beginning and end of production. As design has become more collaborative, involving multiple functions, disciplines, and organizations, there has been a proliferation of enormous amounts of product data, creating challenges in how to control, manage, and keep track of it all. PDM systems have evolved to address these challenges.

Uploaded by

Ain Sha
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We take content rights seriously. If you suspect this is your content, claim it here.
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Product Data Management (PDM)

A variety of Terms
Almost any combination of terms is used, PDM (Product Data
Management) and PLM (Product Life-cycle Management) seem to be
most common.
Definitions of a Product
Result of an industrial
activity
--- > general concept
Product family, brand,
model type, product class
configurable product
--- >abstract class (cannot
be manufactured)
Product configuration,
fixed product
--- > concrete class
(can be manufactured)
Product individual --- > physical artefact,
service activity
All product related
information
PDM manages three different
product data life-cycles
Paper documents
Digital files:
Document files:
specifications, configurations,
purchase orders
CAD drawings, models,
assemblies, parts lists
CAE analysis, NC programs
and plans
Information stored in
data bases
Product type life-cycle:
product development
approval and change
processes
beginning and end of
production
Product individual life-
cycle:
engineering
production, maintenance,
recycling
Product process life-cycle
Product Data
Definitions of PDM
ISO 13584-10 Parts Library:
A representation of facts, concepts, or instructions about one or more
products in a formal manner suitable for communication, interpretation, or
processing by human beings or by automatic means.
Crnkovic, Asklund, Persson Dahlqvist (2003):
PDM is the discipline of controlling the evolution of a product and
providing other procedures and tools with the accurate product
information at the right time in the right format during the entire Product
Life Cycle
PDT (Product Data Technology)-advisory group:
Product Data Technology includes all aspects of the definition and
methods of processing information pertinent to product throughout its
development and operational lifecycle.
Previously: Currently:

The need for a paradigm shift in handling data:
Changing designing activities
-- > single function





-- > single discipline





-- > single person/
organization
-- > multi functions





-- > multi disciplines





-- > many persons/
organizations
The main impact of the new designing activities

Proliferation of an
increasing,
enormous data
Raises many
challenges:
how to control?
how to manage?
how to keep track?
etc.
PDM/PLM
Evolution of the management system
EDM
~ to manage
engineering
documents
PDM
~ to manage
CAD files
PLM
~to manage
product-related
information

Product Lifecycle Management: background
At the conceptual level:
~ a systematic, controlled concept for
developing and managing products
and product related information.
At the operational level:
~ an efficient/effective technique for
developing and managing product and
order-delivery processes: from idea to
scrap.
At the business level:
~ a strategic approach to ensure a
company will continue to remain
profitable and competitive: to become
a leader.
~ creating huge amount of data:
~~ issues of:
i) access, ii) accuracy,
iii) currency.

Categories of Product Data
Product
Data
Sales
data
Purchasing
data
Mnfg.
data
Eng.
data
~ form
foundation
of PDM
Design
data
Design data
CAD
model
Geometric
definition
Documents
Surface
model
Solid
model
curves
primitives
analytic
parametric
-- > Lagrange
-- > Hermite
-- > Bezier
-- > Spline
-- > Rattional Spline
-- > NURBS
Interpolation
Approximation
~ piecewise
Swept volume
Parametric
feature-
based model
Assembly
modeling
-----> 2D dwgs ------->
Assm. dwgs---->
Manufacturing
= variable-driven
modeling to capture
design intent.
~ assembly tree
hierarchy
relations
B.O.M ~ kinematics
~ stress
~ ..etc
Engineering
Freeform model
Purchasing
~ projective invariant ->no distortion
~ strong convex hull->intuitive
~ good vanishing prop->stable
~variable weight->excellent control

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